Men's Classic Thermal Merino Base Layer 1/4 ZipWe've updated the fit of our Men's Classic Thermal Merino Base Layer 1 4 Zip to improve functionality while also enhancing aesthetics. 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 help keep you comfortable and temperature regulated as you enjoy high intensity skiing, hiking,

Made in India: 52% Merino Wool

Best for: light hikes

7-oz 60% organic cotton/40% recycled polyester slub knit

Coverstitching on all seams

40% Polyester | 3

Made from 100% recycled materials (except for zipper and hardware)

Pertex® Quantum® mini ripstop

Heat transfer logo on back-right hip

Wherever you’re headed this svelte carry solution allows you to simply and securely carry a few daily essentials

the Aether Pro is backed by our All Mighty Guarantee

feels big when cradling your head

and turned them into a year 'round pant