As a mid-layer made for more than the mountain, the Smartwool Men's Smartloft 1/2 Zip Hoodie uses a thermal-regulating and quick-drying shell made from a blend of Merino wool and recycled polyester with stretchy elastane. Crafted with a fitted hood for proper coverage on and off-piste, this 1/2 zip is packed with reprocessed wool for sustainable warmth, plus secure thumb hole cuffs for secure comfort.