The Pro Trek Heavyweight Crew is built for cold-weather trekking and mountaineering, delivering maximum insulation and protection. Made with recycled Primaloft and RWS-certified merino wool, this thick, fully padded sock (including the instep) traps warmth while managing moisture to keep feet dry in harsh conditions.
A Comfort Plus cuff ensures a secure yet comfortable fit without excessive pressure on the calf, while the Selective Layering System (SLS) provides targeted reinforcement for durability and support. Perfect for demanding adventures in freezing environments, this sock offers warmth, comfort, and reliability when you need it most.
