We have examined numerous natural yarns in detail for different criteria and their properties and no single material was able to convince in all aspects. After an elimination process, what remained were three natural fibers that in combination deliver an unmatchable level of performance in terms of thermoregulation and moisture management.

• certified supreme merino wool (from organically farmed livestock, no-mulesing)
• Skindry MicroModal (basic material is made of 100% beech wood)
• SolucellAir^TM Cotton (sourced through BetterCottonInitiative)

“Together we want to initiate a rethinking in the industry and with the customer. Until now, only synthetic fibers have been considered to provide reliable properties and functions for demanding outdoor use, whether in sports or at work. We think this is a misconception. We counter this with the highly functional STRIVE products made from 100% natural yarns and can also prove it scientifically,” says Kenneth Kurtzweg, specialist in technical outdoor clothing and knitwear at Eisbär.

Accompanied – and at the same time challenged – by an independent field test team of picky outdoor enthusiasts that pushed the limits of what was first thought possible, performance features have been proven under laboratory conditions and outdoors alike.

Excerpts from test surveys with the Outdoor Test Team Zillertal, which has been evaluating various prototypes in the Austrian Alps since December 2020, support the development results: "My team members are fundamentally impressed by the fact that it is a completely natural product, without any plastic fiber worn next to the skin. You can clearly feel how the natural fibers work, the product does not feel wet, although it has already absorbed a lot of moisture. Your head doesn’t get cold and you don’t overheat, whether during a hard climb or at rest at the top of the summit.”