
Stretchy Flyknit Running Shoes Upper
Description
Technical Parameters
Introduction
Stretchy flyknit running shoe uppers are precision-engineered, single-piece textile components designed for modern athletic footwear. They combine seamless 3D construction, dynamic elasticity, and maximum breathability to elevate performance, comfort, and structural durability.
Product Specifications
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Specification Category |
Details & Parameters |
|
Material Composition |
Recycled Polyester (RPET), Nylon, Spandex, High-tenacity Poly yarns |
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Knitting Technology |
3D Flat Knitting / Computerized Jacquard Weaving |
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Key Performance |
4-Way Stretch, Anti-Pilling, High Tear Strength, Moisture-Wicking |
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Eco-Compliance |
GRS Certified, OEKO-TEX Standard 100, REACH Compliant |
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Application |
Professional Running Shoes, Marathon Footwear, Casual Joggers |
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Size Range |
US Men 7-13 / US Women 5-11 (Customizable per Last) |
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Customization |
Color, Density, Pattern, Logo Integration, Stretch Modulus |
Core Performance Advantages
Targeted Elasticity: Zoned weaving technology ensures flexible toe-off and locked-in heel stability.
Sustainable Manufacturing: Produced using GRS-certified recycled yarns, helping brands meet global carbon-reduction targets.
Precision Edge Finishing: Heat-set and tightly locked edges designed for seamless direct-to-sole bonding or traditional strobel stitching, reducing shoe factory preparation time.
High-Tension Tear Resistance: Engineered with high-modulus core-spun yarns to withstand rigorous finger-pulling during shoe-lasting and high-stress lancing without loop distortion or yarn breakage.
R&D Capabilities
Rapid Prototyping
Turn your design sketches or 3D shoe-last data into physical uppers within 3 to 5 days.
Advanced Equipment
Equipped with industry-leading computerized flat-knitting machines (Stoll / Shima Seiki).
Engineering Support
Professional R&D team offering expert consultation on yarn selection and structural tension optimization.
Quality Control & Certifications
Rigorous Lab Testing: Every batch undergoes strict testing for color fastness, burst strength, and elongation recovery.
Global Certifications: ISO9001, GRS (Global Recycled Standard), and OEKO-TEX Standard 100 certified manufacturing facility.
Manufacturing Strength & Factory Capacity
Production Scale: 50,000+ square meters facility with a monthly output of over 1 million pairs of uppers.
Reliability: 98.5% on-time delivery rate backed by streamlined digital production management.
Packaging & Logistics
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Standard Packaging |
Flat-packed in moisture-proof polybags, organized in reinforced export-grade corrugated cartons to prevent deformation during transit. |
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Shipping Options |
Flexible global logistics support including FOB, CIF, DDP via Sea, Air, or Express (DHL/FedEx for samples). |
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Lead Time |
7-15 days for bulk production depending on order volume and complexity. |
Production Details




Product Qualification
Strength proves trustworthiness

Ingenuity manufacturing, strength exhibition

Our Certificate

Frequently Asked Questions
Q: What is your Minimum Order Quantity (MOQ) for custom uppers?
A: Our standard MOQ is 500 pairs per color/style for custom designs. Lower quantities can be discussed for trial orders.
Q: Can I get free samples before placing a bulk order?
A: Yes, standard existing samples are free. You only need to cover the international courier cost.
Q: How long does it take to develop a new custom flyknit upper?
A: Sample development typically takes 3 to 5 days once the digital design or specifications are confirmed.
Q: Are your flyknit uppers compliant with international environmental standards?
A: Yes, our materials are OEKO-TEX Standard 100 certified and we offer GRS-certified recycled polyester options.
Q: Do these uppers require any special processing before attaching to the shoe sole?
A: No, our uppers feature pre-treated edge locking, making them ready for direct solvent/hot-melt bonding or traditional stitching.
Q: Can you integrate our brand logo directly into the knit pattern?
A: Yes, using advanced computerized jacquard weaving, we can seamlessly embed logos, gradients, and custom patterns into the upper.
Q: What payment terms do you accept for B2B orders?
A: We generally accept T/T (Bank Transfer), L/C at sight, and trade assurance orders via major B2B platforms.
Q: How do you ensure consistent quality across mass production?
A: We follow strict ISO9001 quality control protocols, inspecting raw yarn tension, knitting precision, and finished dimensions at multiple checkpoints.
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