Polaris 286779602 - Replacement MPN: 286779602 Material: Moisture-wicking polyester/spandex Lightweight Base Layer designed specifically for women Four-way stretch No other layer of performance, cold-weather gear is perhaps more important than the one closest to your skin, which is why we put an extraordinary amount of testing and technology into our Lightweight Base Layer designed specifically for women. Cut and sewn to fit a woman's body, this lightweight top features a polyester and spandex blend that is breathable and moisture-wicking. Low-profile seams offer additional comfort under your mid and top layer garments which a drop-down rear tail keeps cold from creeping in.