Challenge Sailcloth


Sale price$12.49 USD
Sold out
Color:Black Knight
Pickup currently unavailable at All Local Pickup is at Grove Outdoors (614 Johnson St, Victoria, BC)


Black Knight

All Local Pickup is at Grove Outdoors (614 Johnson St, Victoria, BC)

Pickup currently unavailable

2614 Bridge St
Victoria BC V8T 4S9


This is the middle-weight option of the Ecopak™ EPX series. This is the perfect fabric for all of your outdoor bag needs and is used regularly by backpack and bike bag makers worldwide! This fabric is made out of 100% recycled polyester components and uses a C0 DWR (no fluorocarbons)! 


Cool things about this fabric:

  • EPX400 has twice the abrasion resistance compared to 420d nylon. Well suited for pack bottoms, or stand-alone for the highest overall durability.
  • 400D face fabric, 45° CrossPly, 70D white ripstop fabric.
  • The woven fabric is 100% Repreve recycled polyester.
  • Proprietary Challenge RUV recycled film backing is 100% recycled and 97% UV Resistant.
  • 45 degree Blue recycled CrossPly yarn improves pattern orientation and reduces cutting waste.
  • Every yard of ECOPAK™ saves over one pound of CO2, compared to nylon pack fabric.
  • ECOPAK™ contains no harmful TPU, PVC, DWR or other coatings.
  • CO2 emissions from manufacturing this recycled polyester are 50% lower than Nylon, 38% lower than virgin film, comparable to organic cotton.


This fabric is sold per linear half yard. 


Tear Strength - ATSM D2261: Warp: 17.8 lb , Fill 14.1 lb

Abrasion - ATSM 3884: 300 Cycles

Waterproof: 200+ PSI , 13.8+ Bar

Width: 56 in , 142 cm

Weight: 8.95 oz/yd² , 304 gsm


Pre-Consumer Recycled

Recycled material created from manufacturing by-products and results in high quality, certifiably sustainable raw material that saves A TON of energy and makes the best use of manufacturing resources.

Global Recycled Standard

GRS tracks and verifies the content of recycled materials in a final product. Our Woojin hardware is GRS certified using pre-consumer recycled nylon.

bluesign® System Partners

bluesign® works in the supply chain to approve products that are safe for the environment, workers and customers. Both Woojin and YKK Japan are bluesign® System Partners.


One of the best-known labels for textiles tested for harmful substances. OEKO-TEX® STANDARD 100 ensures chemicals used in textiles are tested & harmless for your health. Our YKK zipper is made to these standards.