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Dyneema® + Dyneema® Composite Fabrics (formerly Cuben Fiber) Technology

Dyneema® fibers are the fibers from which Dyneema® Composite Fabrics (formerly Cuben Fiber) are made, and are the foundational technology for all Hyperlite Mountain Gear products. The following is an explanation of the differences between Dyneema® fibers, woven Dyneema® fabrics, Dyneema® Composite Fabrics, and Dyneema® Composite Fabric Hybrids (aka Cuben hybrids) which Hyperlite Mountain Gear uses. To read more about DSM Dyneema changing the name of Cuben Fiber to Dyneema® Composite Fabrics, please visit our blog.

Dyneema® Fibers


Technically classified as ultra-high-molecular-weight polyethylene (UHMWPE), Dyneema® fibers are a lightweight high-strength oriented-strand gel spun through a spinneret. Considered the strongest fibers in the world, these extremely burly, low-density fibers are up to 15 times stronger than high-quality steel on a weight for weight basis, yet still float on water. They are also extremely durable and resistant to moisture, UV light and chemicals. Often used in the rope industry, among others, due to the ability to produce stronger and lighter ropes, Dyneema® fibers are also used by the military and law enforcement (personal and vehicle armor), the maritime industry (mooring ropes), and commercial fishing (ropes and nets).

Woven Dyneema® Fabric


Woven Dyneema® fabric is among the most cutting-edge fabrics being used in the outdoor industry as it is made by spinning Dyneema® fibers into full Dyneema® “yarns” and then weaving those “yarns” into a 100% woven Dyneema® fabric; it offers maximum breaking strength, abrasion resistance and cut resistance. Though practically indestructible on its own, Hyperlite Mountain Gear uses a hybrid version of this material in which the Woven Dyneema® fabric is also laminated to Dyneema® Composite Fabrics. This improvement provides more fabric stability as the lamination eliminates weave shift (Dyneema® fibers and “yarns” on their own tend to be “slippery”) and provides the watertight characteristics Hyperlite Mountain Gear’s fabric choices are known for. Backpacks made from Woven Dyneema® fabric are a great choice for the most hardcore outdoor adventurers who are toughest on their gear.

Dyneema® Composite Fabrics (formerly Cuben Fiber)


In simple terms, Dyneema® Composite Fabrics (formerly Cuben Fiber) are a high-performance, non-woven, rip-stop, composite laminate made by sandwiching Dyneema® fiber filaments a thousandth of an inch thick, in various arrangements between thin outer layers of polyester film. The “sandwich” is then melded together in a high-pressure autoclave. Dyneema® Composite Fabrics are lightweight, highly durable, and are 50-70% lighter than Kevlar, four times stronger than Kevlar, and allow flex without losing strength. It also weighs less than silnylon, floats on water, is 100% waterproof before stitched and has high chemical and UV resistance. Originally designed as sails for the world-class sailing industry, Dyneema® Composite Fabrics are the most advanced material choice for modern tents, tarps and stuff sacks and is exactly what is used in all Hyperlite Mountain Gear shelters and stuff sacks.

Dyneema® Composite Fabric Hybrids (formerly Cuben Fiber Hybrids) 


*Used for Hyperlite Mountain Gear Backpacks, Duffels, Bags, Totes and Accessories*


Due to the waterproof characteristics of Dyneema® Composite Fabrics, Hyperlite Mountain Gear laminates it to a face fabric for all of its backpacks, duffel bags, messenger bags and totes. We use a variety of face fabrics including 50 denier polyester, 150 denier polyester and the 100% woven Dyneema® fabric referenced above. Laminating Dyneema® Composite Fabrics to face fabrics is what provides the waterproof characteristics for Hyperlite Mountain Gear products, while the variety of face fabrics provides the durability and abrasion resistance of our ultralight pack and bag lines. While Dyneema® Composite Fabrics are 100% waterproof on their own, stitching creates small holes in the otherwise waterproof laminates. Hyperlite Mountain Gear seals over 90% of seams, and while our packs, duffels, bags, totes and accessories are highly water resistant, we never claim they are 100% waterproof. Use these products with Dyneema® Composite Fabric (Cuben Fiber) stuff sacks to obtain waterproof redundancy and obtain a 100% watertight outdoor gear system.