Sidas Sock Trail T-Free Size:M/L Identical to our standard Allpa

Identical to our standard Allpa 42L Travel Pack in features and function

lightweight frame and Prizm™ Lens Technology

be indestructable

As a certified instructor

Sidas Sock Trail T-Free Size:M/L Identical to our standard AllpaThin, technical and protective socks designed with a separate section for the big toe, to improve your comfort and stability when trail running. The big toe plays an essential role in balance, alignment and propulsion. We developed T Free technology, with athletes like Jonathan Albon, to allow the big toes move freely and independently. All the expected benefits of trail running have been incorporated into the design of these socks. The left foot