Bag Tech Pack: The 10 Elements a Custom Bag Factory Needs

10

Tech pack elements

3 views

Front, side, back flat sketch

8–10 spi

Stitch density spec

7–10 days

OEM sample from a full pack

24 h

Quote turnaround

10+

In-house designers

Tech pack contents

Bag Tech Pack Contents: The 10 Elements Every Custom Bag Spec Needs

These are the ten blocks our sample room reads before cutting anything. Each block below states what to put in it, the unit it is written in, and what happens on the floor when it is missing.

Flat Sketch, 3 Views

Front, side and back at minimum, plus an interior view for any bag with more than 2 compartments. Line drawings, not renders. Call out every seam, panel break and pocket opening. A 3-view sketch is what lets a pattern maker cut a first pattern in 1 working day instead of guessing at panel splits.

3 views · Line art, not renders

Design & structure

Dimensions L × W × H in cm

Finished external dimensions in centimetres, plus capacity in litres, strap drop, handle length and pocket depth. A tolerance of ±1 cm on panels over 30 cm is normal in bag production. Without dimensions the quote is a guess and the first sample is usually 2–4 cm off in one axis.

Tolerance ±1 cm over 30 cm

Gym duffel sizing

Bill of Materials

One line per component: body fabric, base fabric, lining, mesh, webbing, binding, zipper, buckles, sliders, foam, labels and thread. State quantity per bag in metres or pieces. A 35 L duffel typically runs 18–26 BOM lines, and every missing line becomes an email during costing.

18–26 lines on a 35 L duffel

Cost factors

Fabric With Denier and GSM

Fabric choice, consumption, lining and finishing affect the unit price. Compare quotations against the same approved specification.

Compare costs in your quotation

Bag material guide

Colourway With Pantone

One colour block per component, each carrying a Pantone TCX or C code: body, base, lining, webbing, zipper tape, puller, thread and binding. The mill runs a lab dip against the code and returns 2–3 shade options in 7–10 days. Colour approved by photo is the single most common bulk dispute.

Lab dip 7–10 days

Materials & colours

Hardware Schedule

Zipper brand and size (YKK or SBS, #5 or #8), slider type, buckle width in mm (20, 25, 38 or 50), D-rings, swivel hooks, feet, and the finish: nickel, gunmetal, matte black or gold. Custom-moulded hardware adds 10–15 days, so flag it at tech pack stage, not after sampling.

Custom tooling needs a separate quote and schedule.

Trims & hardware

Logo Placement in cm

Method, size and position measured in cm from a fixed reference edge: not “centred”. Give the artwork as AI, EPS, PDF or a 300 DPI PNG at actual size. Position is jigged on the line and checked to ±3 mm. Four positions are standard: main panel, end pocket, strap and interior label.

Position tolerance ±3 mm

Logo method guide

Stitching Specification

Stitch density at 8–10 stitches per inch for body seams, thread type and Tex size, seam type (lockstitch, double needle, bound or bar-tacked) and where reinforcement goes. Load points such as strap anchors are bar-tacked at 42 stitches. Under-specified stitching is where cheap bags fail first.

8–10 spi · Bar-tack 42 stitches

Inline inspection

Packaging Specification

Send the current requirements for your marketplace and destination, including barcodes, bagging, warnings, carton size and weight. We confirm the packing specification and its cost before production.

Follow the current destination-specific packing brief

Packaging & FBA prep

Labelling and Marking

Main label artwork and position, care and content label wording, country of origin, barcode or FNSKU placement, and carton marks including shipping marks and side marks. Getting label wording fixed before the golden sample avoids a relabelling job on 300–5,000 finished bags.

Fixed before golden sample

Packing & export

Have most of these but not all? Send what exists: our design team fills the gaps and returns a complete pack for approval.

Tech pack template

Bag Tech Pack Template: Minimum Viable Pack vs Complete Pack

You do not need all ten blocks to get a quote. This table shows what a minimum viable tech pack has to carry to be quotable, what a complete pack adds, and what each level costs you in sampling time.

Tech pack element

Flat sketch

Minimum viable pack

Reference photo or hand sketch

Complete pack

3-view line drawing with seam callouts

Cost of leaving it out

Pattern maker interprets; 1–2 extra sample rounds

Tech pack element

Dimensions

Minimum viable pack

L × W × H in cm, plus capacity in L

Complete pack

Every panel, strap drop and pocket depth in cm

Cost of leaving it out

First sample lands 2–4 cm off target

Tech pack element

Bill of materials

Minimum viable pack

Body fabric and lining named

Complete pack

All 18–26 lines with quantity per bag

Cost of leaving it out

Quote carries a padding allowance you pay for

Tech pack element

Fabric spec

Minimum viable pack

Fabric family only, e.g. polyester

Complete pack

Denier, GSM and coating in mm, base panel included

Cost of leaving it out

Factory substitutes; fabric hand differs at bulk

Tech pack element

Colourway

Minimum viable pack

Colour names, e.g. black and sand

Complete pack

Pantone code per component plus lab dip approval

Cost of leaving it out

Shade drifts between dye lots on repeat orders

Tech pack element

Hardware

Minimum viable pack

Zipper size and buckle width in mm

Complete pack

Brand, finish, puller style, full schedule

Cost of leaving it out

Hardware upgrade requested after sampling adds 10–15 days

Tech pack element

Logo

Minimum viable pack

Artwork file and rough position

Complete pack

Method, size, cm from reference edge, Pantone

Cost of leaving it out

Logo placed by eye; drift over 1 cm between units

Tech pack element

Stitching

Minimum viable pack

Not stated

Complete pack

8–10 spi, thread Tex, seam type, bar-tack points

Cost of leaving it out

Quoted to factory standard rather than yours

Tech pack element

Packaging

Minimum viable pack

Not stated

Complete pack

Polybag, hangtag, carton pcs and carton dimensions

Cost of leaving it out

Carton plan fixed after production; FBA limits missed

Tech pack element

Labelling

Minimum viable pack

Not stated

Complete pack

Main, care, origin, barcode artwork and positions

Cost of leaving it out

Relabelling on 300–5,000 finished bags

Minimum viable pack

Quote in 24 h

Complete pack

sample in 5–7 working days after specification approval

Sketch only

Design support 2–3 days

Revisions

1 free round

Send Your Tech Pack, Get a Quote in 24 Hours

Upload an AI, PDF, Excel or image pack through the quote form. We come back with a FOB price range, the MOQ for that exact spec and any missing spec lines flagged, within one working day.

Request a Quote

No tech pack

How to Make a Tech Pack for Bags Without an In-House Designer

Roughly half of first orders arrive without a tech pack. Our 10+ in-house designers build one from what you have: photos, a competitor sample, a sketch or a written brief: and you approve it before any fabric is cut. Design support carries no separate charge.

Start from reference photos

Send 3–6 images of bags whose structure you want, plus a target capacity in litres and a price tier. We return a structure proposal and a fabric shortlist in 2–3 working days. See design and structure.

Start from an existing model

Our library covers custom bag styles across 8 categories and 100+ new models go on it each month. Modifying one keeps the sample at 5–7 days instead of 7–10. Browse the product hub first.

Start from a physical sample

Courier a bag you want matched or improved. We measure it, write the BOM and mark the changes you asked for, then quote against that spec. Read sample development for the sequence.

Start from a written brief

Bag type, capacity in litres, target user, channel, price tier and delivery date is enough to open a project. The 12 fields that make it quotable are in the RFQ checklist.

Design consultation and tech pack build-out carry no charge on a project heading for a 300 pcs order.

Manufacturing Capabilities

Common mistakes

Bag Tech Pack Mistakes That Add Sampling Rounds and Cost

Six errors we see most often in tech packs from new buyers, what each one does on the floor, and the control that removes it.

Dimensions given in inches and centimetres at once

Cause: a pack assembled from two sources. Control: we re-issue the pack in cm only, with capacity in litres, and ask for a single approval before pattern cutting. Mixed units cost 1–2 sample rounds; see sample development.

Fabric written as “waterproof nylon”

Fabric choice, consumption, lining and finishing affect the unit price. Compare quotations against the same approved specification. bag material guide.

Logo marked “centred on front panel”

Cause: no reference edge. Control: placement is written in cm from the base seam and the side seam, jigged on the line and checked to ±3 mm at inline inspection. See the logo method guide.

Render supplied instead of a flat sketch

Cause: the pack came from a marketing deck. Control: our designers redraw the bag as a 3-view line sketch with seam and panel breaks, then send it back for approval before cutting. Adds 1–2 days, saves a whole sample round.

Hardware changed after the first sample

Custom tooling needs a separate quote and schedule.

Packing and carton spec written after production

Send the current requirements for your marketplace and destination, including barcodes, bagging, warnings, carton size and weight. We confirm the packing specification and its cost before production. FBA. packaging and FBA prep.

Factory

Custom Bag Factory That Reads Your Tech Pack: 5,000 m² in Guangzhou

Our Guangzhou team coordinates design, cutting, sewing, printing and packing. Specialist logo or sealed-compartment requirements are reviewed during sampling, with the process and inspection criteria confirmed for your bag.

2010

Founded

5,000 m²

Factory floor

500+

Staff

10+

Production lines

50,000+

Bags per month

200+

Fabric suppliers

Quality Control

Request a Factory Tour

File formats

Bag Tech Pack File Formats and Artwork Standards We Accept

What to send, in what format, and the resolution or unit each file has to carry. Anything on this list can be attached to the quote form or emailed to info@venlinker.com.

Deliverable

Flat sketch

Preferred format

AI or PDF vector

Also accepted

PNG or JPG at 300 DPI

Requirement

3 views minimum; seams and panel breaks visible

Deliverable

Full tech pack

Preferred format

PDF, 1 page per style

Also accepted

Excel, PowerPoint, Word

Requirement

Dimensions in cm; one revision date on every page

Deliverable

Bill of materials

Preferred format

Excel or CSV

Also accepted

Table inside the PDF pack

Requirement

One line per component with quantity per bag

Deliverable

Logo artwork

Preferred format

AI or EPS, fonts outlined

Also accepted

PDF or PNG 300 DPI, 2,000 px wide

Requirement

Supplied at actual print size with Pantone codes

Deliverable

All-over print artwork

Preferred format

AI or TIFF at 300 DPI

Also accepted

PSD with layers

Requirement

Repeat marked; up to 150 cm print width

Deliverable

Colour reference

Preferred format

Pantone TCX or C codes

Also accepted

Physical chip or fabric swatch

Requirement

One code per component, not one per bag

Deliverable

Hardware reference

Preferred format

Photo plus dimension in mm

Also accepted

Physical sample by courier

Requirement

Webbing width in mm; zipper size #5 or #8

Deliverable

Packing spec

Preferred format

Excel or PDF

Also accepted

Written email

Requirement

Pcs per carton and carton dimensions in cm

Deliverable

Label artwork

Preferred format

AI or PDF vector

Also accepted

PNG 300 DPI

Requirement

Final wording; care and origin text confirmed

Deliverable

Reference bag

Preferred format

Physical sample by courier

Also accepted

Video plus photos with a ruler in frame

Requirement

We return it with the prototype on request

Quote from a pack

Within 24 h

OEM sample

7–10 days

ODM sample

5–7 days

NDA

Signed on request

Send the files you have; missing lines come back flagged rather than assumed.

Turn Your Tech Pack Into a sample in 5–7 working days after specification approval

Existing showroom samples are free, with courier paid by the buyer. Custom prototypes take 5–7 working days after the specification is confirmed. We quote the prototype fee, courier charge and any sample-fee credit before work starts.

Approval sequence

Bag Tech Pack to Golden Sample: The 6-Step Approval Sequence

What happens to your pack between the day it arrives and the day a sealed golden sample locks the specification for production.

Day 0

Pack review

A merchandiser and a pattern maker read the pack together and return a gap list within 1 working day: missing GSM, an open hardware line, a logo without a reference edge. Nothing is assumed silently. Attach the pack on the quote form.

Day 1

Quote against the spec

Price is quoted line by line against the BOM, with MOQ 300 pieces and the lead time tier stated. Drivers behind the number are explained in cost factors.

Day 1–3

Pattern and material call-off

Speciality materials may need additional sourcing time; availability is confirmed before sampling.

Day 3–10

Prototype build

One production-grade bag, sewn at the 8–10 spi in the pack, with your logo applied in the specified method and position. OEM builds from a complete pack land at 7–10 days. See sample development.

On receipt

Review and one revision

You check fabric hand, dimensions to ±1 cm, hardware, stitching and logo position to ±3 mm. One free revision round is included; a structural change resets the pattern and is quoted as a new sample.

On approval

Golden sample sealed

The approved bag is sealed, photographed and stored at the factory for the life of the programme, and all 4 inspection gates compare production against it: see golden sample approval and AQL inspection.

Pack review

1 working day

OEM sample

7–10 days

Revision

1 free round

Bulk 300–1,000 pcs

Schedule confirmed in the quotation

Related guides

Custom Bag Buyer Guides That Sit Around the Tech Pack

A tech pack decides how the bag is built. These guides decide what goes in it: which fabric, which logo method, what the MOQ arithmetic looks like and how the finished cartons ship.

RFQ Checklist for Custom Bags

The 12 fields that let a factory quote in 24 hours: bag type, quantity, dimensions in cm, fabric, colourways, logo file, hardware, packaging, target market, delivery date, incoterm and sample need.

12 points · Quote in 24 h

Get a quote · Tech pack guide

Custom Bag MOQ Guide

Why the minimum is 300 pieces: cutting lays, 50–100 m fabric rolls and dye lots. How colourways, hardware and print move the number, with 3-colourway math.

MOQ 300 pieces

Bag sets · Cost factors

Sample Cost and Lead Time

Credit terms agreed in your quote

Free sample · Sample development

Bag Material Guide

Polyester 300D–1680D, nylon 210D–840D, ripstop, neoprene 2–4 mm, RPET, TPU/PVC, mesh, canvas 10–16 oz and PU compared by GSM, water resistance, weight and cost tier.

Materials & colours · Material sourcing

12 fabrics · 3 coatings · 2 linings

Logo Method Guide

Define the required test method, conditioning and pass criteria in the specification. Review the chosen material or logo method on the sample, and request an independent test where the programme requires one.

Logo service page · Graphics & printing

7 methods · Min logo 2 cm

OEM, ODM and Private Label

Three routes compared: your tech pack (OEM, sample 7–10 days), our models modified (ODM, sample 5–7 days) and full private label ranges of 3–8 SKUs under one brand standard.

Same 300 pcs MOQ on every route

OEM / ODM workflow · Private label

Custom Bag Cost Factors

Fabric choice, consumption, lining and finishing affect the unit price. Compare quotations against the same approved specification.

Compare costs in your quotation

Customization options · MOQ guide

Factory vs Trading Company

How to tell a bag factory from a trading company in one visit or one video call: floor area in m², line count, in-house sample room, who answers technical questions, audit access Mon–Sat.

Manufacturing capabilities · About the factory

Audits welcome Mon–Sat

Packing and Shipping Terms

Send the current requirements for your marketplace and destination, including barcodes, bagging, warnings, carton size and weight. We confirm the packing specification and its cost before production.

FOB default · Written payment terms

Packing & export · FBA prep

Custom Bag FAQ

48 answers grouped into 7 blocks: MOQ (300 pcs), samples (5–7 days), tech packs, fabrics, logo methods, inspection and payment on 30 / 70 terms, each linking to the full guide.

48 answers · 7 question blocks

Contact · Get a quote

All Custom Bag Buyer Guides

The hub: 11 guides indexed by buying stage, a 7-stage buyer journey and a one-table reference of venlinker MOQ, sample, payment and lead time terms.

11 guides · 7 buying stages

Blog · FAQ

Blog: Sports Bag Sourcing Topics

Six topic clusters on sports bag sourcing: materials, manufacturing and QC, MOQ, branding, design by bag type and shipping: each mapped to the guides and product pages that cover it.

6 topic clusters · 11 guides indexed

All guides · About venlinker

Bag types

Custom Bags We Build From Tech Packs: Gym, Yoga, Running, Travel and Team Categories

Each category has its own tech pack conventions: capacity band, denier range and the specification lines that matter most. Category pages list every sub-type with specs.

Gym & Training Bags

Duffels, backpacks and totes at 20–55 L; pack must state base denier and shoe tunnel ventilation.

Gym duffels · Gym backpacks

Yoga & Studio Bags

Mat carriers sized to 60–71 cm mats; pack must state mat diameter and strap drop in cm.

Mat bags · Pilates totes

Running & Outdoor Bags

Waist packs and slings at 0.5–12 L; pack must state finished weight in grams and belt length.

Running belts · Hydration packs

Outdoor & Travel Bags

Daypacks and weekenders at 10–60 L; pack must state coating in mm and whether seams are welded.

Weekenders · Dry bags

Swim & Wet Gear Bags

Mesh and TPU builds at 5–40 L; pack must state weld width and drainage detail.

Mesh swim bags · Wet bags

Team & Equipment Bags

Squad carriers at 40–120 L; pack must state base panel denier and bar-tack points.

Team duffels · Ball bags

Work-Gym Lifestyle Bags

Commuter formats at 15–35 L; pack must state laptop sleeve size for 14–16 in devices.

Work-gym backpacks · Crossbody

Accessories & Sets

Pouches and 3-piece sets at 0.5–15 L; pack must state which pieces share a fabric lot.

Gym bag sets · Dust bags

Buyer fit

Bag Tech Packs by Buyer Type: Brands, Sellers, Programs and Corporate Orders

Who sends us tech packs, what state they usually arrive in, and how much design support the project needs before sampling.

Startup & DTC Brands

First packs usually cover 1–2 styles with sketches and no BOM; design support fills 4–6 of the 10 elements.

Activewear & Fitness Brands

Ranges of 3–8 SKUs with complete packs; OEM samples run 7–10 days and are prototyped in parallel.

Private Label Programs

Packs written once and reused across 2,000–20,000 pcs a year; hardware and label lines locked at the start.

Amazon FBA & E-commerce Sellers

Send the current requirements for your marketplace and destination, including barcodes, bagging, warnings, carton size and weight. We confirm the packing specification and its cost before production.

FAQ

Bag Tech Pack Guide: Frequently Asked Questions

Do I need a tech pack to get a bag quote?

No. A bag type, a quantity from 300 pcs and a reference photo are enough for a price range within 24 hours. A tech pack turns that range into a firm number because the BOM is quoted line by line. The 12 fields that make an enquiry quotable are in the RFQ checklist.

Do you provide a bag tech pack template?

We issue your pack in our own format: a 1-page-per-style PDF carrying all ten elements, dimensions in cm and the BOM as a table: and you approve it before sampling. If you already work in Excel or AI we fill your template instead. Ask on the quote form.

What is the difference between a tech pack and a spec sheet?

A spec sheet is one page: dimensions, fabric and colour. A tech pack is the full build document with 18–26 BOM lines, a 3-view sketch, hardware schedule, stitching at 8–10 spi, packing and labelling. A spec sheet gets a quote; a tech pack gets a repeatable bag. See the OEM / ODM workflow.

How much does it cost to have you build the tech pack?

Will you keep my tech pack confidential?

Yes. We sign an NDA on request before you send anything, usually within 1 working day. Files sit under a project code held by one named contact and are not shown to other buyers; moulds and patterns are stored the same way. See project communication.

Can you improve a tech pack a previous factory wrote?

Yes. Send it with the physical sample if you have one. We measure the bag, rebuild the BOM to a full 18–26 lines, add the missing GSM, coating in mm and 8–10 spi stitching lines, and return a marked-up pack with a comment on each change, usually within 2–3 working days. Read factory vs trading company for why packs from traders often lack these lines.

How many revisions of the tech pack are included?

The pack is revised freely up to golden sample approval, then frozen. After freezing, each change is a written change order because patterns, markers and jigs are already built, and a re-cut typically costs 3–5 days. 1 free sample revision covers dimension, hardware or logo tweaks: see golden sample.

Which tech pack element is missed most often?

The stitching specification, followed by packing. Buyers write fabric and hardware carefully and leave stitch density blank, so the bag is sewn to factory standard rather than theirs. Writing 8–10 spi and naming the bar-tack points takes two lines and settles the argument at final inspection.

Send the pack

Send a Bag Tech Pack and Get a Quote Plus a Sample Date

Attach whatever you have: a full pack, a spec sheet, a sketch or three reference photos. A gap list, a FOB price range against the BOM and a sample date come back within 24 hours, and an NDA is signed first if you ask.

Request a Quote