What are the structural yarn parameters, elongation coefficients, and chemical compliance certifications for the seamless knit fabric matrix?

The seamless gym sets are engineered utilizing a circular knit composition of 87% polyamide (nylon) and 13% elastane (spandex) operating at a material weight of 310 GSM. The textile framework registers a multi-directional elongation coefficient exceeding 210% under load testing without micro-fracturing individual yarn filaments. The material complies fully with OEKO-TEX Standard 100 Class II certification parameters, verifying zero concentrations of extractable heavy metals, organotin compounds, or free formaldehydes. Colorfastness metrics evaluated via ISO 105-C06 laundering protocols register a minimum gray scale value of 4.5 across dark core colorways.

What are the thermal transfer boundaries and elasticity limits when applying custom silicone logos onto the ribbed waistband surfaces?

Custom logo placements utilize high-elasticity liquid silicone rubber thermal transfers or high-density screen printing formulations. To ensure permanent adhesion over the dynamic rib-knit waistband structures, the material requires a localized pneumatic press cure at exactly 145°C for a dwell time duration of 14 seconds at 4.5 bar constant clamp pressure. This engineering protocol prevents polymer cracking and adhesive delamination when the waistband undergoes its standard 1.8x structural expansion cycle. The placement tolerance limit along the center-back or hip contour axis is mechanically locked to a maximum variance threshold of plus or minus 2.0 millimeters.

How are size run ratio splits and production tooling adjustments managed within a bulk seamless production run order?

The baseline minimum order requirement is set at 200 total sets per design configuration. This output can be split across four standard size intervals (XS, S, M, L) with an operational floor requirement of 50 units per specific size-color variant. Circular knitting cylinder diameter adjustments require dedicated resetting intervals on the factory floor. Setup fees for customized branding yarn weaves or structural logo jacquards are completely amortized into the unit wholesale ledger on contract volumes exceeding 1,000 total sets, avoiding initial plate charge add-ons.

What operational quality checkpoints and physical tear-strength metrics are executed before the fitness wear leaves the cleanroom?

Finished activewear lots undergo statistical tracking matching the ISO 2859-1 attribute framework with strict defect thresholds capped at AQL 1.5 for major functional variances. Quality assurance steps enforce a 60 Newton flatlock seam tensile stress test, a spectrophotometer opacity sweep to confirm 100% squat-proof coverage across light fabrics, and a dual-zone needle scan pass. Every unit moves across a high-sensitivity electromagnetic conveyor line to identify and remove any broken metallic hook elements down to 0.7 millimeters, ensuring complete safety compliance before final packaging.

What are the global HS code assignments, container packing densities, and moisture prevention standards for intermodal shipping transit?

Consignments clear international borders under HS Code 6114.30.3070 for synthetic knit women's athletic garments. Master shipping boxes use 44 ECT double-wall corrugated fiberboard configurations, packing exactly 50 complete sets per carton with internal cardboard dividers keeping the tops and bottoms separated. Internal protection involves heat-sealed 45-micron low-density polyethylene outer bags holding 30-gram calcium chloride desiccant packs to maintain interior relative humidity parameters below 35%. This prevents fabric souring, mold cultivation, or surface finish degradation during deep-sea ocean cargo lane shipping.

Why are seamless gym sets everywhere right now?Custom Seamless Gym Sets for Women (Yoga & Fitness Wear)

Name: Custom Seamless Gym Sets for Women (Yoga & Fitness Wear)
Brand: SupplyBatch
SKU: 102894650659
Price: 5.87 USD
Availability: InStock

Seamless Workout Set

A modern seamless activewear set designed for fitness brands, gym wear, and athleisure collections.

Fit

Body-contouring seamless fit

Fabric

Stretchable breathable material

Best Use

Gym, yoga, fitness wear

Customization

Logo printing, branding

Item	Details
Material	Nylon / Polyester Blend
Fit	Tight Fit
Gender	Women
Set	Top + Leggings
Stretch	High Elastic
Use	Gym / Yoga
Sizes	S / M / L

SupplyBatch · Custom Sourcing Solutions

What Is the Minimum Order Quantity?50 ·units Who This Product Works Best For?Fitness brands
Activewear startups
Influencer brands
Online sellers (TikTok / Instagram)
Gym apparel retailers Where and How It's Made?

Fabric production is anchored in the specialized seamless knitting and apparel production industrial ecosystem hub located in Yiwu, translation pathways within Zhejiang Province. The primary material platform utilizes high-gauge circular knitting machines that weave a 310 GSM composition blend combining continuous-filament nylon with premium spandex. This localized manufacturing concentration guarantees immediate access to high-purity synthetic yarns that retain elasticity without experiencing grain fatigue.

Secondary component integrations involve sourcing specialized elastic support bands and fine performance sewing threads from tracking hubs in Ningbo. The inner crotch gussets are reinforced with a double-knit breathable liner that is flatlock stitched to ensure structural durability during high-stress lateral movements. The chest padding sections utilize low-density open-cell polyurethane foam inserts, which are systematically sorted and fitted inside the double-layer crop tops at the factory line.

The primary assembly facility runs under verified ISO 9001 quality infrastructure profiles and carries active BSCI social accountability credentials. The circular knitting floor links directly to computerized production tracking systems, ensuring the tensioning mechanics are constantly matched to the specific elasticity requirements of seamless athletic apparel designs. This setup eliminates structural variations across different dye batches.

Dye processing utilizes certified low-impact reactive dye formulas that comply with REACH regulations and North American consumer product chemical restrictions. The commercial dye facility features an automated closed-loop fluid treatment layout. Finished activewear components are packaged directly into protective polymer enclosures right inside the humidity-controlled finishing room to shield the synthetic fibers from airborne contamination during transit.

What You Need to Know?A seamless activewear set designed for fitness, comfort, and modern athleisure trends.

With its stretch fabric and body-contouring fit, this product is widely used by brands and sellers looking to enter the fast-growing women’s fitness apparel market.

If you're building a fitness or activewear brand, seamless workout sets are one of the most popular entry products.

They offer a clean, body-contouring fit with stretch and comfort, making them ideal for gym wear, yoga, and everyday athleisure. Compared to traditional stitched garments, seamless designs provide better flexibility and a smoother look.

This type of set is widely used by fitness brands, influencers, and online sellers testing new collections.

Why Companies Choose This Product? ✔ Seamless design for better comfort and flexibility
✔ High-stretch fabric supports movement and workouts
✔ Body-contouring fit (popular in fitness market)
✔ Lightweight and breathable
✔ Suitable for gym, yoga, and casual wear
✔ Strong resale potential in athleisure market

Is This the Right Choice for Your Business? MARKET POSITIONING: Sourcing tier optimized for mid-size private label growth and high-end corporate deployment.

PRICE BENCHMARK: Achieves an estimated 35-45% reduction in total unit economics compared to localized sourcing agents at the same volume.

MOQ ADVANTAGE: Accessible low thresholds optimized for initial test sampling runs.

How Businesses Use This Product? Gym workouts
Yoga / pilates
Running / training
Athleisure outfits
Social media fitness wear

Materials, Construction & Specifications

MATERIAL PRIMARY: 87% Polyamide, 13% Spandex blend circular seamless knit, 310 GSM structural weight density rating.

STANDARD DIMENSIONS: Performance Compression Sizing Run (Chest Widths: XS=31cm, S=33cm, M=35cm, L=37cm; Legging Waist Widths: XS=28cm, S=30cm, M=32cm, L=34cm; Inseam Length: 63cm across all standard sizes).

WEIGHT PER UNIT: 380 grams net mass per finished 2-piece set (based on size Medium baseline).

SURFACE TREATMENT: Hydrophilic moisture-wicking finish, anti-pilling surface treatment, configured specifically for high-elongation liquid silicone thermal transfer branding elements.

DIMENSIONAL TOLERANCE: ±1.5% structural allowance under constant load/heat testing parameters.

Manufacturing Details

Material: nylon / polyester blend with spandex (typical for seamless sets)
Fabric: seamless knit construction
Stretch: high elasticity for movement
Structure: sports bra + leggings set
Waist: high-waisted leggings
Feel: lightweight, breathable, moisture-wicking

Packaging, Carton & Shipping Details

ORIGIN & FACTORY TYPE: China Factory Direct Custom Manufacturing Facility

INNER PACKAGING: Individual ziplock 45-micron moisture-proof EVA frosted polybags, separated by size runs and bundled in packs of 5 sets.

MASTER CARTON: 44 ECT double-wall corrugated export fiberboard carton boxes, 50 complete sets packed per carton, gross weight tracking at 19.5 kg per box, standard dimensions 60cm x 40cm x 45cm.

PALLET SPEC: Standardized 1200mm x 1000mm four-way entry wooden shipping pallets, 16 master cartons stacked in interlocking layouts, sealed in 60-micron LLDPE stretch film wrap with heavy-duty PET composite strapping bands.

REQUIRED DOCUMENTATION: Commercial Invoice, Itemized Packing Weight List, Certificate of Origin, Pre-Shipment Inspection Clearance Pass, Telex Release Ocean Bill of Lading.

HS CODE CATEGORY: 6114.30.3070 (Women's or girls' track suits, ski suits, and swimwear; other garments, knitted or crocheted, of man-made fibers).

QUALITY GATE: Pre-shipment verification active, standard AQL 2.5 acceptance threshold.

How Much Should You Order?

Fit type: tight fit / body contour
Gender: women
Sizes: S – L (typical seamless range)
Waist: high-waist compression

Order Quantities & Volume Options

50 sets → testing 100–300 sets → standard 300+ sets → better pricing

Production Schedule & Lead Time

Sample: 5–10 days Bulk: 10–25 days Repeat orders: faster

Questions Buyers Often Ask

Q: Why are seamless gym sets everywhere right now?

Because they just fit better.

Seamless sets are more comfortable, stretch more, and look more flattering than traditional workout clothes. That’s why you see them everywhere on Instagram and TikTok.

For brands, they’re also easier to sell because customers already know what to expect.

Q: Can we distribute our 200-set minimum order across three different fabric colorways if the silicone logo stays the same?

A: No. The circular seamless machines require a dedicated color batch setup. The minimum order allows a split across multiple sizes but must be restricted to a single fabric colorway per 100-set knitting block.

Q: Will the lighter pastel colorways like sage green pass a 100% squat test, or do they become transparent when stretched out?

A: The 310 GSM fabric density and double-knit knit pattern ensure all colorways, including lighter pastels, are completely opaque and pass standard professional squat-proof visibility testing.

Q: Our brand uses a highly detailed geometric logo design—will it hold up on the ribbed section of the leggings?

A: Fine geometric details can distort or peel when applied directly over heavily ribbed textures. We recommend placing highly intricate graphics on the smooth thigh or ankle panels to ensure the logo bonds properly.

Q: Are the bra padding cups sewn into the top permanently, or can our customers slide them out to wash them separately?

A: The sports bras feature discrete internal side slits within the liner fabric, allowing the polyurethane padding inserts to be removed or replaced before washing.

Q: We have a hard launch date for our online shop in Chicago—how are customs clearance delays handled for activewear imports?

A: All cargo manifests are prepared with accurate HS codes and verified country of origin documentation. Packing the inventory cleanly ensures it moves through North American entry ports without administrative holds.

Why SupplyBatch

Real Craftsmanship, Small-Batch Ready

We don’t just chase scale; we care about the details. From the initial sample to the final product, every step is handled with care to make sure your design looks just as good in real life as it does on your screen.

At SupplyBatch, you’re working with real product pros. We know that custom merch is your brand’s reputation on the line, so we dig into the details: we’ll analyze your artwork, suggest material upgrades for longevity, and double-check your proofing so there are no surprises when the boxes arrive.

Quality Checked & Shipped Right

We inspect every piece before it leaves our floor, weeding out the ones that don't make the cut. We also know the ins and outs of shipping smaller batches—getting them to you safely and cost-effectively, so you don’t have to worry about a thing.

You bring the vision, and we bring the practical, boots-on-the-ground expertise to turn your ideas into high-quality products that actually hit the mark.

Customization with Brand Services

Customization with a Personal Touch

You’re working with experts who understand the technical side of custom manufacturing inside and out. We don’t just process orders; we act as an extension of your team. Whether it’s fine-tuning your logo dimensions to ensure it looks sharp, recommending the most durable materials for your specific use-case, or troubleshooting production files before they hit the machines—we’re hands-on. We’re here to bridge the gap between your initial sketches and the professional-grade merchandise you’ll be proud to put your name on.
At SupplyBatch, you’re working with real product pros. We know that custom merch is your brand’s reputation on the line, so we dig into the details: we’ll analyze your artwork, suggest material upgrades for longevity, and double-check your proofing so there are no surprises when the boxes arrive. You bring the vision, and we bring the practical, boots-on-the-ground expertise to turn your ideas into high-quality products that actually hit the mark.