Smartwool Classic Thermal Merino Base Layer Pattern 1/4 Zip Women's Alpine Rock Packs Smart pocketing keeps the essentials

Smart pocketing keeps the essentials

Its microfiber construction allows for the absorption of more than three times its own weight in water

Burly PU-coated nylon and mesh combine for a design that is durable and vented

This pack family is made specifically for tough adventures that would rip most other ultralight-style packs to shreds

Six mesh pockets for interior storage

Smartwool Classic Thermal Merino Base Layer Pattern 1/4 Zip Women's Alpine Rock Packs Smart pocketing keeps the essentialsOur new and improved Women's Classic Thermal Merino Base Layer Pattern 1 4 Zip is here to bring you a better feeling, better performing, and better looking garment. As one of our heaviest base layer tops and best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flatlock seam construction to help minimize chafing as well as keep you comfortable and temperature regulated as you enjoy high