Smartwool Classic Thermal Merino Base Layer Pattern 1/4 Zip Women's Alpine Rock Packs Top corner anchor points

Top corner anchor points

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

differential cut

Six mesh pockets for interior storage

Smartwool Classic Thermal Merino Base Layer Pattern 1/4 Zip Women's Alpine Rock Packs Top corner anchor pointsOur 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