The Alto Pants are crafted from Woolly Treemerino™, a Swedish-made fabric blending 60% merino wool and 40% Tencel® for a warm, stretchy, and lightweight feel. Merino provides natural insulation and odor resistance, while Tencel® adds structure and improves moisture transmission. Cut in a regular tapered fit with zippered side pockets and a drawstring waist, they work as a standalone pant or a midlayer under shell pants for high-output cold-weather activities. The fabric is fully biodegradable and recyclable, made from mulesing-free, traceable Australian wool and EU Ecolabel-certified Tencel®.
