It is 54% bio-based

fixed hood has hidden adjustment cords that cinch down for protective warmth

it is easy to see why climbing becomes a lifestyle for so many

stretch fabric

Men's Hike Targeted Cushion Crew Socks SW002492 upf It is 54% bio-basedSupport your feet through all types of trails in our Hike Targeted Cushion Crew Socks. Feel precise cushioning where you need it most, with a 4 Degree elite fit system for a dialed in, performance oriented fit, plus Indestructawool technology for added durability. Breathable mesh zones help keep your feet feeling good, while the comfort welt makes sure these socks never slip in your boots. Sock Height: Crew Indestructawool Technology with extended