The direct answer: release one approved specification
Before knitting a bulk sweater order, buyer and manufacturer should agree which dated tech-pack revision controls production. That record should identify the style, approved yarn and colour references, construction, measurement chart with tolerances, approved sample, quantity by style, colour and size, labels, trims, packing and planned dispatch milestones. Resolve conflicting files before release. This guide proposes a buying checklist; it is not a universal contract, certification standard or record of a WTBF customer project.
Build a release register buyers and suppliers can both check
Use a concise register that links each approval to a file revision or physical reference. Record the approver and approval date, list any open points, and state whether production is released or held. A prototype may approve appearance while a later size set approves measurements; identify the purpose of each sample rather than calling every sample “final”. Agree which requirements are fixed and who can authorise subsequent changes.
| Approval area | Reference to record | Question before release |
|---|---|---|
| Yarn and colour | Composition, yarn reference and approved shade | Are materials available for the confirmed quantities? |
| Fit and construction | Tech-pack revision, sample ID and size-set chart | Are measurement methods and tolerances agreed? |
| Order quantities | Purchase-order revision and style/colour/size matrix | Do all variant quantities reconcile to the order total? |
| Branding and packing | Label, trim and packing instruction revisions | Are artwork, placements and carton quantities approved? |
| Production schedule | Release date and dispatch milestones | Are open points closed and capacity confirmed? |
Check materials, fit and presentation against the same version
Compare the approved garment with the technical sheets, yarn and colour reference, measurement chart, labels and packing instructions together. Identify any difference in composition, stitch structure, garment weight direction, measurement method or label placement. Ask how finishing and care preparation are reflected in measurement approval. For multiple sizes, confirm the approved size set and grading rather than assuming one base-size sample settles the whole range. Keep each colour and material reference identifiable for bulk and later reorders.
Use a revision log when a buyer changes the order
For illustration, suppose a buyer approves pullover P01 revision R03, then requests a longer body in R04. Record the changed measurement, affected sizes, reason, decision owner and approval date. Ask whether yarn is committed or knitting has started, which batches are affected, and whether resampling or a revised quotation is needed. Hold the affected scope until both parties agree the instruction. Retain the previous approval for traceability and clearly mark it superseded. This is a hypothetical workflow, not an actual WTBF order.
- Identify the old and new revision and exactly what changed.
- Define the affected styles, colours, sizes and batches.
- Confirm sample, material, cost and schedule implications.
- Record approval and notify the people using the production instructions.
Separate specification approval from production capacity
A released specification removes ambiguity but does not create available machine time or shorten yarn sourcing. WTBF reports a 10,000 m² factory, 100 employees, 500 machines and annual capacity of one million garments; these are supplier-provided scale figures confirmed on 2026-10-06, not an independent audit or an order-specific delivery promise. Bulk projects of 1,000–1,000,000 pieces are reviewed against materials and capacity. Small orders of 50–100 pieces remain available, with quantity per style and colour confirmed during quotation.
Send the approved and unresolved details with your inquiry
Send your current tech pack or reference, sample status, yarn priorities, quantities by style, colour and size, branding, packing, destination and required arrival date. Mark unresolved points so they can be assessed before quotation and release. WTBF can discuss OEM production from your specification or ODM development where details remain open. Three-day sampling and seven-day dispatch apply only to eligible projects after requirements and materials are confirmed; large orders require capacity-based scheduling, and dispatch does not include transit.
Questions about this guide
What is a production-release tech pack?
It is the agreed version of the garment specification used to start production, linked to approved samples, materials, quantities and packing instructions. A draft brief or an unresolved email thread is not a complete release record.
Can a buyer change measurements after sample approval?
Discuss the change before affected production continues. Confirm which goods or materials are already committed, whether another sample is required, and the revised price and schedule. Record a new approved revision instead of silently replacing the old file.
Does an approved tech pack guarantee seven-day dispatch?
No. WTBF’s seven-day dispatch option applies only to eligible projects after requirements and materials are confirmed. Large orders need an order-specific capacity plan, and international transit is additional.