TOP-5 CHINA SEAMLESS FACTORY · TRUSTED BY 200+ BRANDS · XIAMEN
Make the activewear you've
been dreaming about.
Yesseam is a top-5 China seamless activewear factory — fully in-house circular knitting, premium fabrics and tested, certified quality, trusted by 200+ global brands. A real factory you can audit, not a middleman.
START YOUR COLLECTIONKNITTED AS ONE.
NO SEAMS.
Most "seamless" suppliers stitch panels together. We knit the whole garment on our own circular machines as a single tube — for a true second-skin fit, fewer chafe points and better stretch recovery. That's the seam in Yesseam.
SEE OUR SEAMLESS CAPABILITYONE OF CHINA'S TOP 5 SEAMLESS ACTIVEWEAR FACTORIES — VERTICAL FROM YARN AND PATTERN TO FINISHED, FOLDED, PACKED GARMENTS. WE DEVELOP AND PRODUCE BUTTERY-SOFT, SWEAT-WICKING, SQUAT-PROOF SEAMLESS COLLECTIONS TO A STANDARD 200+ GLOBAL BRANDS TRUST.
Founded in 2014 in Xiamen, Fujian, Yesseam (Xiamen Yesseam Garment Co., Ltd.) is one of China's top 5 seamless activewear factories and a top-tier seamless specialist — running fully in-house circular seamless knitting, cut & sew, dye-sublimation and finishing under one roof, a level of vertical integration most factories outsource. Over 200 global brands manufacture seamless leggings, sports bras and matching sets with us — from emerging DTC labels to established names — drawn by the quality and control that full in-house production makes possible.
VIEW CAPABILITIESEXPERIENCE
BRAND PARTNERS
KNIT TO FINISH
SHIPMENT
SEAMLESS ACTIVEWEAR,
ACROSS EVERY CATEGORY.
Private-label and OEM/ODM production across the full activewear range — explore the lines we specialise in.
Seamless Activewear
Seamless sets, leggings and bralettes knitted in-house on circular machines — our signature line.
EXPLORE → / 02Yoga & Pilates Apparel
Buttery-soft, squat-proof leggings, sports bras and matching sets for yoga and pilates brands.
EXPLORE → / 03Private Label & OEM
Your brand on proven styles, or full custom development from tech pack, sketch or sample.
EXPLORE → / 04Leggings & Sports Bras
High-rise, scrunch, pocket and V-waist leggings; light-to-high support seamless sports bras.
EXPLORE → / 05Matching Sets
Coordinated legging+bra and legging+top sets in seamless, ribbed and brushed fabrics.
EXPLORE → / 06Custom Development
Fabric R&D, Pantone matching, fit iteration and sampling — built to your spec.
START A PROJECT →STYLES WE'VE MADE.
ALL FULLY CUSTOMISABLE.
A sample of recent seamless and cut-and-sew sets. Every style can be remade in your fabric, color, logo and fit — or we develop from your tech pack. Nothing here is a fixed catalogue; it's proof of what we can build for your brand.
Seamless Strappy Set94/6 · 8 colors
SEAMLESS
Halter Flare Pants SetV-waist · 6 colors
SEAMLESS
Contrast Leggings SetV-waist · squat-proof
STITCHED
Ombre Leggings SetDip-dye gradient
DRESS
Tennis DressBuilt-in shorts
15+ styles · seamless & cut-and-sew · fully customisable in your fabric, color & logo · samples in 3–7 days · VIEW FULL LOOKBOOK →
See a style you love? We'll make it yours.
Send it over and we'll remake it in your fabric, color and logo — plus a free tech pack & quote.
EVERYTHING FROM
A SKETCH TO A SHIPPED CARTON.
Choose the level of support your brand needs — we plug into any stage of your seamless activewear development.
Private Label
Apply your brand to our proven, ready-to-produce seamless leggings, bras and sets. The fastest route from idea to a sellable collection.
OEM Manufacturing
Send your tech packs and we manufacture to spec — grading, fit, trims, labels and packaging exactly to your standards.
ODM & Design
Build on our in-house designs and fabric library. We co-develop styles, fits and colorways tailored to your market.
Seamless Knitting
Circular-knit seamless sets and bralettes with a true second-skin feel, produced on our own seamless machines.
Print & Embellishment
In-house dye-sublimation, screen print, heat-transfer logos and bonded branding for a clean, durable finish.
QC, Pack & Ship
In-line and final inspection, polybag and carton packing, and worldwide air/sea freight with DDP options.
FOUR FAMILIES.
ENGINEERED FOR MOTION.
NU-LUX
Buttery nylon/spandex — the signature handfeel for leggings and bras.
AIR-MESH
Ultralight knit for ventilation panels and breathable tops.
RIB-SEAMLESS
Circular-knit ribbed seamless — second-skin sets and bralettes.
ECO-RECYCLE
GRS-certified recycled nylon/polyester with full traceability.
FROM INQUIRY TO
DELIVERED ORDER.
A clear, five-step path. Most new brands go from first email to bulk shipment in about 6–8 weeks.
- 01
Inquiry & Swatches
Share your styles, quantities and references. We send a fabric swatch pack within 48 hours.
- 02
Development Sample
We pattern, knit and sew a fit sample in 7–10 days for your review and approval.
- 03
Pre-Production
Final fit, trims, labels and packaging are confirmed; deposit secures your slot.
- 04
Bulk Production
Lean lines run your order in 30 days standard, 15 days rush, with in-line QC.
- 05
QC & Worldwide Ship
Final inspection, packing and air/sea freight with DDP options to your door.
A MANUFACTURING PARTNER FOR BRANDS THAT TAKE QUALITY SERIOUSLY.
Whether you're refining a first collection or scaling a proven one, you get the same thing: real in-house seamless development, certified and inspected quality, honest lead times, and a team that has shipped for 200+ activewear labels worldwide.
- Emerging DTC & Shopify activewear brands
- Yoga, pilates, running & training labels
- Boutique studios launching branded apparel
- Established brands adding a seamless capsule
SEAMLESS ACTIVEWEAR MANUFACTURING,
ANSWERED.
Why is Yesseam considered a top seamless activewear manufacturer in China?
Yesseam is regarded as one of China's top 5 seamless activewear factories and a leading seamless manufacturer in Xiamen. We run fully in-house circular seamless knitting, cut & sew, dye-sublimation and finishing under one roof — a level of vertical integration most factories outsource. With 12 years of experience, 200+ global brand partners, BSCI, GRS, OEKO-TEX Standard 100 and ISO 9001 standards, we deliver the quality of the best seamless specialists with the consistency that full in-house production allows.
Are you a real factory or a trading company?
Yesseam is a real factory in Xiamen — we run circular seamless knitting, cut & sew, dyeing and finishing in-house. There is no middleman and no markup, and you are welcome to audit the facility or request live video of your order in production.
How do you ensure quality and consistency?
Every order is checked with in-line inspection during knitting and sewing and a final AQL inspection before it ships, under ISO 9001 quality management and BSCI, GRS and OEKO-TEX Standard 100 standards. You also approve a real fit sample before any bulk production begins.
What are your sample and production lead times?
Development samples take 7–10 days. Bulk production is 30 days standard and 15 days rush after sample approval.
Do you offer private label, OEM and ODM?
All three. Private label applies your brand to our developed styles; OEM manufactures to your tech packs; ODM lets you build on our in-house designs and fabric library.
What products can you manufacture?
Seamless leggings, sports bras, matching sets, shorts, tanks, tops, seamless bralettes and light outerwear for yoga, pilates, training and athleisure.
What is seamless activewear and why does it matter?
Seamless activewear is knitted on circular seamless machines as a single tube with minimal stitching — giving a second-skin fit, fewer chafe points, better stretch recovery and a smoother look under clothing. Yesseam knits seamless in-house, which is where our name comes from.
What fabrics and certifications do you offer?
Buttery nylon/spandex, ultralight mesh, ribbed seamless and GRS-certified recycled knits. The facility is BSCI audited and works with GRS and OEKO-TEX Standard 100 certified materials.
Where are you located and do you ship worldwide?
Yesseam is based in Xiamen, Fujian, China, and ships worldwide by air and sea, with DDP options to the US, EU, UK, Canada and Australia.
How do I get started and request a quote?
Email [email protected] with your styles, target quantities and any tech packs or references. We send a fabric swatch pack within 48 hours and a full quote shortly after.
A REAL FACTORY YOU CAN VERIFY —
NOT A TRADER YOU HAVE TO HOPE ABOUT.
Sourcing seamless activewear from China comes with real worries. Here's how Yesseam answers every one — before you even send an inquiry.
What B2B buyers worry about
- Is this a real factory, or a trading company adding a markup?
- Will the quality actually be consistent across the whole order?
- Will they go quiet after I've paid the deposit?
- Are my designs and tech packs safe?
- Is their "seamless" really seamless, or just panels stitched together?
How Yesseam answers it
- A real Xiamen factory — we knit seamless in-house; factory audits and live production video welcome. No middleman, no markup.
- Certified, inspected quality — BSCI, GRS, OEKO-TEX Standard 100 and ISO 9001, with in-line and final AQL inspection on every order.
- A real product manager replies within 24h in English, Spanish or Chinese — never a bot, never ghosting.
- Your designs stay yours — we sign NDAs on request and never share or resell your work.
- True seamless, knitted as one piece — verified on the fit sample you approve before any bulk runs.
SEND ONE INQUIRY.
OUR DESIGN TEAM GOES TO WORK.
YOU DON'T NEED FINISHED DESIGNS TO START. TELL US YOUR IDEA — HERE'S WHAT LANDS IN YOUR INBOX, FREE:
Your idea → a real tech pack
Send a sketch, a photo, or a Pinterest board. Our in-house design team turns it into a production-ready tech pack — at zero cost, before you commit a cent.
The latest design inspiration
Get our newest seasonal silhouettes, best-sellers and fresh fabric drops — the inspiration to build your next collection on.
Feel the fabric first
We ship a buttery-soft seamless swatch pack to your door within 48 hours. Touch the quality before you order.
No bots. No ghosting.
A real product manager replies within 24 hours — in English, Spanish or Chinese. Not a sales script.