Warmer Feet, Less Cramps and No Fin Chafing The unique combination of Polyester and Spandex of Adrenalin 2P Thermo Shield provides great insulation wet or dry. And with its 170% 4 way Super-Stretch it not only feels extremely comfortable it allows you to perform with it acting just like a second skin.Fleece comfort and protection without restriction Superb thermal insulation 50 UPF UV sun protection, durable and lightweight Stretch 170% for 4-way stretch comfort and flexibility Durable Stretch Flatlock Stitching for maximum product life and comfort Three panel comfort construction with a flat sole for a comfortable fit Prevent Fin Chafing, great for all fins for bodyboarding, diving and snorkelling