Whether you're logging miles on the trail or vert on the skin track, the Rab Men's MeCo 165 Zip Top has your back. Rab blended ethically sourced merino wool from Australia and recycled polyester fibers, and then threw Cocona carbon technology into this lightweight baselayer top. Made from discarded coconut shells, Cocona is natural, eco-friendly, and cannot be washed out of the fabric.The result is a fast-drying baselayer that keeps up with your fast pace and that won't stink when you wear it a few days in a row on your winter hut trips or late-spring backpacking treks.