Classic Thermal (250) Merino Base Layer Pattern 1/4 Zip - Mens 17 x 14 x 6 in / 43 x 36 x 15 cm now with an improved fit

now with an improved fit and sustainable materials

The bottom is a dedicated cooler compartment which features a leak resistant zipper

Durable trekking trousers for adventures in the mountains and forest

Satisfying comfort food at home

Classic Thermal (250) Merino Base Layer Pattern 1/4 Zip - Mens 17 x 14 x 6 in / 43 x 36 x 15 cm now with an improved fitSmartwool's new Men's Merino 250 Base Layer Pattern 1 4 Zip has been rebuilt to provide you with a more functional and fashionable garment. As one of their 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 help keep you comfortable and temperature regulated as you enjoy high intensity skiing,