Washed T-Shirt Shrinkage and Size Tolerance Buyer Guide

Direct answer

For washed T-shirt orders, shrinkage and size tolerance are separate requirements. Shrinkage is dimensional change after a specified washing and drying treatment. Size tolerance is the permitted difference between a garment measurement and the approved size specification at a defined inspection stage. A 100% cotton washed T-shirt in the 220–300 GSM range needs both requirements in writing before a 1,000-piece MOQ bulk release.

Define the two controls

Measurement tolerance describes whether the finished garment matches the approved chart at delivery. Shrinkage describes what changes after an agreed laundering test. A garment can meet its delivery measurement and still fail a dimensional-change limit, or show an acceptable test change while missing a delivery point. Do not replace either control with the phrase prewashed.

For an illustrative example, an approved body length is 72 cm and the delivery tolerance is ±1 cm. A sample is 72 cm before laundering and 70 cm after the agreed test. The change is approximately -2.8 percent. Whether it passes depends on the separately agreed limit; this example is not a universal standard.

Calculate dimensional change as: (after-test measurement - before-test measurement) divided by before-test measurement, multiplied by 100. Record the signed result and the measurement point. Do not report one unexplained overall percentage.

State when the chart applies

Write the test plan before approval

Agree on measurement points, technique and method edition, washing procedure, drying procedure, number of cycles, sample selection, conditioning and acceptance limits. AATCC TM150 addresses garment dimensional changes after home laundering. ISO 5077 addresses dimensional change of textiles following specified washing and drying procedures. Ask the laboratory to confirm the applicable method and complete procedure; a method name alone is not a commercial acceptance specification.

The report should identify style, size, color and production lot; record measurements before and after testing; state test conditions; and show a decision for every agreed limit. Keep the report with the approved sample and purchase specification.

Review length and width separately

Do not accept a report with only one overall percentage. Compare each agreed measurement with its own limit, then assess the resulting fit. An oversized T-shirt could retain enough chest width while becoming shorter than the approved silhouette allows. Where relevant, review neckline appearance, sleeve balance and garment twisting alongside measured results. Photographs can explain observations but should accompany measured results, not replace them.

Approve a representative finished sample

Confirm that the sample represents the intended fabric, construction,

Buyer release checklist

Before the 1,000-piece MOQ release, confirm composition, 220–300 GSM target, size chart, measurement points, wash and dry conditions, cycles, test method, acceptance limits, representative sample and approval record. This washed-tshirt-shrinkage-size-tolerance reference should stay linked to the dated specification. For NA and EU buyers, send the product brief, test plan and sample decision to Weavnora at postmaster@weavnora.com.production wash and decoration. Record finished measurements before laundering. Apply the agreed procedure, including preparation and conditioning, and record the resulting measurements. Review each result against its acceptance limit.

If a result fails, document whether the next action is a corrected sample, an investigation or an explicitly approved specification change. Do not silently change the acceptance limit to match the sample. Link the approval decision to the exact sample and specification revision. Revisit the test plan when material, wash route or other relevant production inputs change.

A washed garment moves through several stages. Separate measurements before the production wash, finished-garment measurements after production washing and finishing, and measurements after the consumer-laundering test. State whether the size chart describes the finished garment ready for packing. Keep earlier production measurements in a separate record.

Identify the specification revision, sample size, color and measurement diagrams. Include body length and chest width, plus any point critical to the intended fit.