Womens Thermal HDi Skins Long Sleeve Rash Vest in Black Deia Village in Mallorca in June, Spain Stock Image Image of houses. The C Skins Womens Thermal HDi Skins Long Sleeve Rash Vest in Black is built for cold water performance, offering exceptional insulation without compromising flexibility. Made from 12oz Poly Pro, it delivers serious warmth while maintaining lightweight comfort and quick dry properties that keep you dry between sessions. Strategically placed seams allow for full freedom of movement, so you can paddle, surf, or train without restriction. Whether you're layering up under a wetsuit or wearing it on its own, the HDi Skins Rash Vest keeps your core warm and your focus sharp perfect for pushing through chilly conditions in total comfort.