The icebreaker 200 Oasis Short Sleeve Crew is so versatile that you’ll want one for every day of the week. This go-anywhere base layer is made from breathable 100% merino wool jersey that keeps you warm and regulates body temperature, so you’ll stay comfortable whether you’re skiing or sipping hot chocolate by the fire. Details: 100% Merino - Soft merino fibers regulate body temperature in all weather conditions and resist odors Gusseted underarms for mobility and comfort Offset shoulder seams to prevent friction Flatlock seams to prevent friction Drop tail hem for added coverage