Tailored for a woman’s figure, the Hot Chillys Micro-Elite Chamois Women's Zip-T is a classic midweight synthetic baselayer. How classic? This is a direct descendent of the original piece from 1984! Updated, of course, to include modern stretch seam construction for chafe-free movement, and bio-silver for odor blocking so no matter how active you are, you can be confident in feeling fresh. Thumbhole loops keep the sleeves smooth as you glide into your next layer, and we’re so confident of the opacity of this zip turtleneck it has a UPF 30 sun protection rating for those spring days when you need long sleeves against the chill.. and sun protection against the rays bouncing off the snow fields. A 4-way stretch with plenty of elastane for movement, a zip open collar if you need to do a little venting that fits nice and cozily when you don’t, this is the unsung hero of your core cold weather wardrobe, the piece that traps warmth and moves moisture so you can stay comfortable out there this winter, first run to last.. first lap to finish line.