Engineered with advanced membranes, taped seams, and dynamic protective technologies.
Understanding hydrostatic head ratings, breathability coefficients, and membrane layers is critical for high-end procurement.
Modern weather protection relies on complex laminate layers. Unlike cheap consumer jackets that use basic polyurethane coatings, high-performance apparel utilizes multi-layer membranes (ePTFE or Hydrophilic TPU) bonded to a rugged outer shell and a protective interior backer.
As a leading Chinese custom factory, we construct garments capable of resisting water columns exceeding 20,000 mm (hydrostatic rating) while maintaining a breathability rating of less than 6 RET (Resistance of Evaporation of a Textile). This guarantees dry comfort even during high-aerobic output in alpine or maritime storms.
“True waterproofness requires flawless execution at the micron scale. If the hot-melt polyurethane seam tape is applied at the wrong pressure or temperature, the entire garment system fails under heavy wind pressure.”
| Layering | Water Resistance | Breathability (MVTR) | Target Applications |
|---|---|---|---|
| 3-Layer (3L) | > 28,000mm | 20,000 g/m²/24h | Mountaineering, Offshore Sailing |
| 2.5-Layer | > 15,000mm | 15,000 g/m²/24h | Trail Running, Fastpacking |
| 2-Layer (2L) | > 10,000mm | 10,000 g/m²/24h | Urban Commuter, Light Skiing |
Combining state-of-the-art manufacturing facilities with direct supply chain agility.
Xiamen Yuelei Sports Co., Ltd. operates a state-of-the-art manufacturing facility in Xiamen, China, covering 1600㎡ and staffed by approximately 30 highly skilled technical apparel professionals. We specialize in OEM and ODM for high-performance outdoor apparel, utilizing advanced production equipment and rigorous quality control processes to ensure every product meets the highest international standards. Our factory is equipped to provide comprehensive customization services, allowing us to tailor our offerings to the specific needs of our B2B clients.
Xiamen Yuelei Outdoor Sports Co., Ltd., the parent company under which our core brand LKVER is based, began selling ski jackets and wetsuits on AliExpress in 2021. Due to a surge in orders and our third-party suppliers' inability to produce on time and maintain consistent quality, the company decided to establish its own production workshop under the LKVER brand. As the workshop was built, Yuelei Outdoor Sports Co., Ltd. expanded its wholesale trade model and now operates two Alibaba International platforms and one AliExpress store. Every year, we handle production and customization for a large number of new and returning customers globally.
Direct tracking data from our factory floor in Xiamen, Fujian Province.
Equipped Machinery: High-temperature tape sealing machines, programmable laser-cutting systems, multi-head embroidery stations, and hydrostatic water column testers.
A look at the logistical, structural, and material advantages that empower our B2B customers.
Xiamen acts as a premier apparel hub. We have immediate access to world-class fabric suppliers, DWR chemical specialists, and hardware vendors (like YKK and SBS zippers). This reduces local transport times and minimizes component delays.
Transitioning from a retail model on AliExpress to an industrial wholesale operation allowed us to refine our setups. We specialize in low-MOQ prototyping for emerging brands while retaining the capacity to scale to tens of thousands of units for larger seasonal orders.
Our in-house design and pattern-making teams turn conceptual tech drawings into functional, sealed-seam samples in as little as 7-10 days, allowing our global partners to capitalize on rapid market shifts.
We ensure your products comply with European and North American customs, chemical restrictions, and safety regulations.
Environmental standards are changing. Standard C6 and C8 durable water repellent (DWR) chemicals are being phased out in favor of eco-friendly, fluorocarbon-free alternatives (PFC-Free / PFAS-Free).
Yuelei is at the forefront of this shift. We collaborate with chemical engineers to apply bio-based DWR formulas that repel water without releasing persistent bioaccumulative toxins. By sourcing from our factory, you ensure compliance with impending import bans in the US and Europe, shielding your brand from customs delays and environmental penalties.
Different regions demand different specifications. We optimize your designs for your target market.
Designed for heavy wear and tear. We suggest 70D–100D Cordura or Taslan face fabrics with robust zippers, engineered to resist abrasion from branches and rocks during backcountry exploration.
High-visibility colors (such as orange accents or neon yellow), heavy marine-grade reflective strips, and salt-water resistant YKK AquaGuard zippers. Fully seam-taped to repel continuous salt spray.
Stealth-focused designs using low-noise brushed tricot face fabrics, combined with high-grade camouflage patterns. Windproof, waterproof, and silent in movement.
A professional guide to conducting technical audits on potential manufacturing partners.
When auditing a factory in China, look beyond raw price points. To ensure long-term durability and quality, evaluate their testing equipment, material sourcing, and internal quality control protocols.
At Yuelei Sports, our quality control is integrated into every phase of production. We inspect incoming rolls of laminate fabric for pinholes, run test batches through seam sealing machines, and test completed jackets using a pressurized water column. This mitigates risks before bulk shipments leave our facility.
Stay ahead of market demands with insights into the future of technical apparel design.
To simplify recycling processes, brands are shifting toward mono-material jacket designs—using polyester for the outer shell, membrane, and inner lining. This allows the entire jacket to be recycled without disassembling components.
Body-mapped panels place highly breathable, stretchable fabrics under the arms and back, while placing highly durable 3L fabrics on the shoulders and hood where rain and friction impact most.
Nanospun polyurethane membranes provide high air permeability, allowing fresh air to flow while keeping liquid water out. This is ideal for active pursuits like backcountry skiing and trail running.
Answers to common questions about fabric specifications, MOQ, customizations, and production cycles.
Our standard MOQ for custom jackets is 500 units per style/color, which allows us to source custom-dyed technical fabrics efficiently. However, we can accommodate smaller production runs (100–200 units) for emerging brands or specialty designs, depending on the availability of stock fabrics.
Every taped seam is applied using high-temperature hot-air welding machines. We verify these seals using a hydrostatic pressure tester to confirm that both the seam tape and the fabric meet or exceed 10,000mm–20,000mm of water column resistance before proceeding to bulk packaging.
Yes. We source certified PFC-free (C0) durable water repellent coatings and ePE/PU membranes that comply with EU REACH regulations and US state laws (including California AB 1817) targeting harmful chemicals.
Proto samples typically take 7 to 14 days, depending on fabric availability. Bulk production ranges from 45 to 60 days after prototype approval and deposit receipt, which accounts for technical fabric weaving, dyeing, and seam-sealing quality checks.
We supply YKK, SBS, and SAB zippers, alongside Duraflex and Nifco cord adjustments. We advise using YKK AquaGuard water-repellent zippers for critical pockets and main entry closures on high-performance shells.
Yes, we provide full ODM services. Our pattern makers can develop custom grading charts and designs based on your reference physical sample, tech pack, or concept sketches.
We run inline inspections at multiple stages: pattern cutting, seam sealing, lining attachment, and final packing. Our in-house QC inspectors follow AQL 2.5 standards to check fabric integrity, seam strength, zipper action, and sizing precision.
We are a direct manufacturer. Xiamen Yuelei Sports Co., Ltd. operates a 1600㎡ workshop in Xiamen with specialized sewing and heat-press machinery. We also run Alibaba international storefronts to manage direct factory pricing and client communications without third-party trading markups.
Explore our range of hunting jackets, packrafts, offshore sailing gear, and insulated layers.
Yuelei