Custom Swimwear Manufacturer

What swimwear do we manufacture?

Swimsuit manufacturers differ mostly in how they handle stretch knit, lining and elastic — the three things that decide whether a swimsuit survives a season of pool water. Our swimwear range covers:

• Bikinis — triangle, bandeau, underwire-free and high-waist bottoms, with removable padding options
• One-piece swimsuits — classic, high-leg, long-sleeve and cut-out styles, fully lined
• Swim trunks and board shorts — elastic or drawstring waist, mesh or knit brief lining
• Rash guards and swim tops — long and short sleeve in tighter-knit swim fabric for sun coverage

Bikini manufacturers are easy to find and hard to qualify. The products look simple in photos; the difference shows up after ten swims, when cheap elastic relaxes and unlined fabric goes transparent. Everything below is how we control that, and you can check each claim before spending a sampling budget.

Which fabrics, linings and construction methods do we use?

Shell fabric is nylon/spandex or polyester/spandex swim knit at 190–220 GSM with four-way stretch. Nylon/spandex has the softer hand-feel most brands want for fashion swimwear; polyester/spandex takes sublimation prints better and holds colour longer in chlorinated water. Front panels and the crotch are always lined — usually in a lighter matching swim knit — and one-pieces and bikini tops can take removable padding or moulded cups. Swim knit is bought by composition and weight, not by name: tell us the hand-feel and price point and we will match it. Prints influence the decision too — all-over sublimation needs a polyester base, while solid colours and digital prints run on either. If you are unsure which side of the nylon/polyester decision your collection belongs on, our fabric sourcing team will swatch both against your target price.

Edges are finished with elastic binding sewn under tension so the garment grips without digging in, or with folded coverstitched edges where the design calls for a cleaner line. Straps are adjustable with rings and sliders where specified, and seams that carry load — underband, leg openings, strap attachments — are bar-tacked. Swim trunks get a mesh or knit brief liner, an elastic waistband with drawcord, and a secure pocket option.

How does production work from tech pack to bulk order?

Send a tech pack, or screenshots plus a reference sample with notes on fit and coverage. We confirm fabric and lining, draft the pattern, and produce a prototype in 10–15 days through our sample development process. Fit approval on swimwear should happen on a body, not a table — elastic tension reads completely differently when worn, and swimwear blocks are drafted with negative ease, smaller than the body. Bulk production runs 24–30 days after sample approval, with in-line QC and a final inspection before packing.

MOQ is 50 pieces per style with sizes mixed freely. All-over prints are sublimated or digitally printed by audited partner workshops before cutting, so placement and colour are locked at the fabric stage. Hygienic liners are applied to bottoms as standard, and your labels, hangtags and packaging complete the private-label setup. Swim trunks can share prints and drawcord colours with the women's line, so a joint capsule produces as one program.

What quality control and testing applies to swimwear?

Swimwear has its own failure modes, so the QC plan goes beyond standard garment checks. Colourfastness is tested against chlorinated water using the method in ISO 105-E03 — the international standard for colour fastness to swimming-pool water — alongside sea-water and washing colourfastness where the fabric will be sold for beach use. Elastic is checked for stretch and recovery after repeated extension, because relaxed leg openings are the most common swimwear return. Final inspection covers lining attachment, binding tension at leg openings and straps, and hardware function — the components that fail in wear, not on a hanger.

Measurements are checked against the approved chart with a ±1 cm tolerance on critical points, shrinkage is verified after laundering, and chlorine and salt both degrade elastane over time — which is why fabric choice and testing matter more than any single seam. Every fabric batch ships with an AZO-free test report to EN ISO 14362-1. For buyers who need broader chemical-safety documentation, the OEKO-TEX Standard 100 framework explains what certified fabrics are tested for, and we can source accordingly. We are an Alibaba Verified Supplier with an SGS on-site audit, shipping worldwide by DHL, FedEx, UPS or sea freight.

Swim ranges usually extend into activewear built on similar stretch fabrics, with shorts and tank tops as cover-ups, and underwear for brands building a full close-to-skin line.