The short answer: to start a swimwear brand, treat the fabric as the real product, decide between private label blocks and custom patterns, and find a maker whose minimums fit a first run. US swimwear makers built for startups run styles from about 24 to 100 pieces per colorway; full custom cut-and-sew usually starts at 100 to 300. Premium swim fabric is a recycled nylon and Lycra knit that stretches four ways and resists chlorine and sun. Los Angeles and Miami are the main US hubs. Plan for at least one fit sample, because swimwear fit is unforgiving.
Swimwear is a high-margin, high-repeat category with a devoted customer, and it is also one of the hardest garments to make well. A swimsuit is a few grams of fabric that has to stretch in every direction, hold its shape wet, survive chlorine and salt and UV, and fit a moving body. Get the fabric and the fit right and you have a brand people rebuy every season. Here is how to start.
Step 1: Start with the fabric, because it is the product
More than any other garment, a swimsuit is its fabric. The premium standard is a nylon-elastane knit, and the best versions pair a recycled nylon such as Econyl with Lycra or a regenerated elastane. These cost more per yard but hold color, shape, and stretch far longer than the cheap route, a polyester-spandex blend that is more chlorine-resistant and cheaper but stiffer in the hand.
Fabric weight, measured in grams per square meter, matters too. A heavier knit feels substantial and controls better; a lighter one drapes. Two makers quoting the same bikini can differ by a third on price purely on fabric, and the cheaper quote often hides a substitution you will only notice after the first wash. Decide the exact fabric, its recycled content, and its weight before you compare anything, because it is the single biggest driver of both cost and quality.
Step 2: Choose private label blocks or full custom
Private label swimwear means the maker already has proven, fit-tested patterns, a one-piece, a triangle top, a high-waist bottom, and you add your fabric, colors, and label. It is faster, minimums are lower, and the fit is already sorted, which is why most new swim brands start here. You are buying a known pattern in your colors.
Full custom, or cut-make-trim from your own pattern, means the maker builds your swimsuit from your tech pack: your seams, your coverage, your hardware, your grading across sizes. It gives you a signature fit and a product no one else sells, but it needs a real tech pack, fit samples, and higher minimums. Many brands launch on private label blocks to reach market and prove demand, then invest in custom patterns for the styles that earn it.
Step 3: Get the construction right
The seams and finishing decide whether a swimsuit lasts a season or falls apart in a month. Quality swimwear uses flatlock or a four-thread overlock at stress seams so they stretch without popping, and coverstitch or bound edges at the legs and neckline. The elastic has to be chlorine-resistant, or it dies fast in a pool. Linings, cups, and adjustable hardware each add cost and each show in the finished garment.
Ask every maker how it finishes seams and edges, whether it uses chlorine-resistant elastic, and whether cups and linings are included or extra. These details are invisible in a product photo and obvious in the hand, and they are usually the reason one quote is cheaper than another at the same silhouette.
Step 4: Know the minimums and the US hubs
| Program | Typical starting MOQ | Best for |
|---|---|---|
| US private label, startup-friendly | 24 to 100 per colorway | Launching a swim brand fast |
| US full custom cut-and-sew | 100 to 300 per style | A signature fit and unique styles |
| Dye-sublimation printed | 50 to 200 per style | Bold prints and pattern-led lines |
| Overseas at volume | 300 to 1,000+ | Lower unit cost once demand is proven |
Los Angeles and Miami are the main US swimwear manufacturing hubs, and several makers there run low minimums built for startup brands with faster turnaround and closer oversight. Domestic cut-and-sew typically runs 6 to 12 weeks. A US maker is often the smart choice for a first run because you can get to a good fit sample quickly and reorder without a long overseas lead time.
Step 5: Budget for fit samples and price for margin
Swimwear almost always needs at least one fit sample before a production run, because fit cannot be guessed from a sketch and a poor fit will sink returns. Build a sample round, and a possible second, into your timeline and budget. Ask each maker for the fit-sample lead time and fee and whether it credits against production.
Your cost combines the fabric, the cut-and-sew labor, and any print or pattern setup. Get each maker to itemize those, quote at two or three volumes, and add freight and duty for a true landed cost. Swimwear carries a strong retail multiple, but only if you price from the real number. If you sell wholesale to boutiques and resort shops as well as direct, put a system in place to keep on top of every wholesale invoice, because unpaid terms are what strangle a growing apparel brand's cash flow between seasons.
Step 6: Vet the manufacturer before you commit
Send the same brief to every maker so the quotes are comparable: the silhouette and coverage, the exact fabric and weight, whether it is solid or printed and by what method, the size range, your label and hardware, and the quantity per style and colorway. A tech pack with measurements or a reference garment you want the fit matched to removes most of the back-and-forth.
Confirm the maker actually cuts the fabric you want rather than substituting a cheaper knit, ask for a sewn sample before production, and check identity, registration, and certifications. For more on comparing makers and reading a first quote, see our guides on how to vet a supplier and domestic versus overseas manufacturing.
What is the minimum order for swimwear?
US private label swimwear built for startups starts as low as 24 to 100 pieces per style and colorway. Full custom cut-and-sew from your own pattern usually starts around 100 to 300 per style. Overseas factories at volume commonly start at 300 to 1,000 pieces at a lower unit cost. Printed styles start around 50 to 200 pieces depending on the maker.
What fabric should swimwear be made from?
Premium swimwear uses a nylon-elastane knit, often recycled nylon such as Econyl paired with Lycra or a regenerated elastane, for four-way stretch, shape recovery, and softness. A polyester-spandex blend is the cheaper, more chlorine-resistant alternative. Fabric weight in grams per square meter also matters, since a heavier knit controls and lasts better.
Can I make swimwear in the USA?
Yes. Los Angeles and Miami are the main US swimwear hubs, and several makers there run low minimums built for startups with 6 to 12 week lead times and closer oversight. A US maker lets you reach a fit sample quickly and reorder without a long overseas wait, which is why many new brands launch domestically before moving volume overseas.
The takeaway
A swimwear brand rewards founders who respect the fabric and the fit: specify a real swim knit, start on private label blocks to launch fast, get the construction right, budget for fit samples, and price on true landed cost. Prove your styles at low minimums, then scale the winners. When you are ready to make them, describe your swimwear to the swimwear manufacturers sourcing agent and start comparing real makers today.
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