Biotrek Socks M GB38021251 Aero-optimized fabric delivers 3% decrease

Aero-optimized fabric delivers 3% decrease in CdA

The overall is breathable

flame print

It's dyed with a low-impact process that significantly reduces the use of dyestuffs

Technical approach shoe designed for mountainguides and mountain workers looking for a topperformance product for approach routes andclimbing

Biotrek Socks M GB38021251 Aero-optimized fabric delivers 3% decreaseWearing the right gear can make all the difference in your outdoor experience, and with UYN BIOTREK socks your feet will experience a feeling you've never experienced before. Made with a combination of the most advanced protection and wicking technologies, along with innovative, bio based materials such as NATEX, which provides extreme lightness and speed of drying. Combined with the advanced hydrophilic properties of ECOLYPT, your feet will always