The Alto Wool Crew is a performance midlayer built from a 60% merino wool and 40% Tencel Lyocell blend, combining natural warmth and odor resistance with the structural moisture-wicking properties of cellulose-derived fiber. Its open-knit construction makes it equally effective as a thermal underlayer beneath a shell jacket or as a standalone piece on milder days, adapting across activities from skiing to hiking to daily wear. The relaxed fit and soft hand feel keep it comfortable next to skin, while the fully natural fiber composition means the garment is both biodegradable and recyclable at end of life.