Thermabase is an extra layer of warmth for your body. A warmer alternative to rashguards. Made from 0.5mm thick neoprene and a titanium lining that reflects heat back to the body while wicking away moisture. The use of Flatlock Stitching technology is a guarantee of the highest quality stitching, which provides unparalleled durability of the product. You can use it as an extra layer under the wetsuit during the colder months, or as a thin protection on warmer days. The Thermabase will provide you with excellent protection against the cold and wind.