The Men's Oasis Long Sleeve Half Zip is the ultimate do everything baselayer. Built from our soft, luxurious 200gm merino jersey fabric, Oasis keeps you warm in cool weather and breathes well as you heat up. And you can open the half zip for instant cooling on the fly. To ensure comfort on the move, the Oasis Long Sleeve Half Zip has offset shoulder seams, set in sleeves and flatlock stitching throughout, plus a slightly longer bottom hem in back. It's a good thing merino resists odor so well, because you'll want to wear this shirt for every activity, day after day. Weight: 200 Lightweight Fabric: 100% Merino wool Fit: Slim Best for: Snow Sports, Outdoor Hiking, Travel Lifestyle Benefits: Softness, versatile warmth and breathability with instant ventilation, great fit Features: Zip neck collar for temperature regulation, set in sleeves, offset shoulder seams prevent chafing, drop tail hem for added coverage, Icebreaker Merino heat transfer logo Care: Machine wash. Dries fast in the shade, but do not tumble dry. Exact instructions on the care label.