Neither of these fibres were specifically invented for use in Motorcycle jeans, yet high strength and abrasion resistance qualities lend themselves extreamly well to rider protection.
Kevlar Jeans have been around for decades. Australian brands like Draggin Jeans changed the game with Kevlar backed denim which is still the standard today.
In the context of riding jeans the 2 respective fibres and their construction offer 2 quite different outcomes.
The Kevlar in Motorcycle Jeans is typically a knitted fabric stitched to the inner side of a standard cotton denim jeans. Thicknesses of Kevlar as well as area coverage then become the variables for comfortability and performance. For example a light Kevlar fabric only hemmed to the more vulnerable impact areas may offer some comfort and relief but not perform as well overall. Regarding performance overall, however, you would be hard-pressed to find a higher performing motorcycle jean than a pair of thick layered full coverage Kevlar Jeans. Some are rated to slide for 7 or even up to 12 seconds.
The issue with Kevlar has never been about performance. It has been the trade-off against other factors such as comfortability off the bike, practicality in the heat and simply the daggy look that’s typically been associated with them. The higher the rating (e.g. 12 seconds) the bigger these trade-offs are.
UHMWPE / DYNEEMA /SPECTRA
Enter UHMWPE. (Ultra-high-molecular-weight polyethylene). Also known as brand names Dyneema or Spectra (Similar to how Kevlar is Dupont’s brand name for their Para-Aramid Fibre).
The structure of motorcycle jeans with UHMWPE is completely different. The UHMWPE fibre is woven in with standard cotton (and a bit of elastane and Lycra for comfort) to form a single layer blended denim fabric that produces motorcycle jeans not too dissimilar from a regular pair of denim jeans in look and feel.
How is this able to be done?
UHMWPE as a fibre, offers much higher strength at reduced weight compared with Kevlar. This allows a much thinner layer of fibres to still offer high abrasion resistance. Compared to Kevlar®, Ultra High Molecular Weight Polyethylene is 5 times more resistant to abrasion, 40% lighter and has 2.5 times greater tensile strength. The key aim for many of the technical fibres out there is high performance and low weight.
Bringing this back to why this is important for you. There are now Motorcycle jeans that you can wear in summer or to work without the discomfort of being too hot or being overly rigid.
Camino Motorcycle denim set out to create protective jeans that look and feel like regular jeans.
Check out our launch range below