evo.com | Smartwool Long Underwear Tops > Half base layer, half mountain hoodie, all Smartwool. The Smartloft 1/2 Zip Hoodie blends Merino comfort with lightweight insulation for warmth that never feels bulky. Pull up the fitted hood, zip in when the temps drop, and let the thumbholes keep everything in place while you keep moving. Thumb Holes Fitted Hood 47% Recycled Polyester / 38% Merino Wool / 15% Elastane DWR Fabric 1/2 Zip Closure | Smartwool Smartloft 1/2 Zip Hoodie Men's 2027 - Large Brown | Wool/Elastane/Polyester