Fabric & Quality · September 23, 2026 · Viva Gymwear Editorial
Learn which material details to request and why a weight or fibre percentage cannot replace sample testing.
GSM describes grams per square metre of fabric. It can help compare fabric mass when samples are otherwise comparable, but it does not establish hand feel, opacity or support on its own. Knit structure, yarn, finishing and fit all change the result. Ask whether the quoted weight is a target or a measured value and which variation is acceptable for your order.
Stretch describes how far a fabric extends under stated conditions. Recovery describes how well it returns after the load is removed. A material can stretch easily yet bag at the knees after wear. Ask how performance is assessed and compare the sample after repeated movement. For a formal claim, use an agreed test method rather than a hand-stretch demonstration as the only evidence.
Customers may perceive support from fabric stretch force, pattern dimensions, waistband construction and fit together. A high elastane percentage does not automatically create better compression. Overly tight garments can reduce comfort or expose opacity problems. Define the activity and desired feel, then evaluate the finished garment across relevant sizes.
Check pilling, colourfastness, wash-related dimensional change and the behaviour of seams and logos. Informal wash trials are useful for development, while standardised tests can support more specific requirements. Ask the supplier or testing provider to identify the method and report scope. Avoid claims such as anti-pilling or colourfast without evidence that applies to the actual material and treatment.
For each candidate, record the fabric reference, composition, target weight, knit, finish, colours, sample fit and review results. Add concerns and the decisions required before approval. Choose the option that matches the customer experience and cost plan, not the one with the most impressive number. Retain a swatch and approved sample as references for repeat orders.
It may feel different, but support depends on more than weight. Compare finished garments on the intended wearer.
A hand check is a screening step. Define and substantiate the claim using an appropriate assessment.
Send your styles, intended market, size range, colour choices, target quantity and delivery requirements. Ask us to confirm the applicable MOQ, sampling scope and quotation for your project.