Classic All-Season Merino Base Layer 1/4 Zip Size:SM Made from bluesign-approved ultra lightweight

Made from bluesign-approved ultra lightweight Ultra-Sil 30D Cordura® nylon with a C0 non-PFC DWR

With 3 inches of thickness

Its small size and light weight keep your load minimal

Compact and lightweight

Designed specifically for smaller faces

Classic All-Season Merino Base Layer 1/4 Zip Size:SM Made from bluesign-approved ultra lightweightThe foundational layer for every season in the alpine. The Classic All Season Merino Base Layer 1 4 Zip is the workhorse of any layering system, designed to handle the wide range of temperatures encountered on a summit push. It withstands the friction of backpack straps and harness webbing while keeping soft, temperature regulating Merino wool next to your skin. The deep chest zipper allows you to dump heat instantly during high output approaches,