The Alto Half Zip is a technical midlayer constructed from Woolly Treemerino™, a Swedish-made blend of 60% merino wool and 40% Tencel® Lyocell that delivers warmth, stretch, and breathability in a lightweight package. Merino wool provides natural odor resistance and insulation, while the Tencel® Lyocell adds structural integrity and improved moisture transmission. The relaxed fit makes it versatile enough to layer under a shell jacket on the slopes or wear standalone on an autumn hike. All materials are renewable, biodegradable, and recyclable, with mulesing-free traceable wool sourced from Australia.
60% merino wool (19.3µm), 40% Tencel® Lyocell construction
Woolly Treemerino™ fabric made in Sweden, garment produced in Latvia
Natural odor resistance from merino wool
Highly breathable and moisture-wicking
Relaxed fit for versatile layering
Mulesing-free, traceable Australian wool
Renewable, biodegradable, and recyclable materials
