New condition, size 10. 38% Merino Wool. Love the look and fit of our Swiftly tops? Then you'll love this winter version, developed specifically for cold weather workouts, in a fabrication that's over 30% Merino Wool. On top of being warm and thermoregulating, this half zip is made with seamless construction in the body to minimize chafing. Fabric is four-way stretch merino wool Sweat-wicking Merino Wool is soft, naturally insulating and will help regulate your temperature naturally insulating temperature regulating sweat-wicking soft handfeel naturally breathable features Designed for: Run No chafe: Seamless construction in the body minimizes chafing Thumbholes: Help keep your sleeves in place and hands warm Fit : Body Skimming, hip length