Thermabase is a thin neoprene material that reflects body heat thanks to its titanium lining. It is less stretchy and warmer than Thermalite and can be used as a thin protection in warmer waters or as an extra layer under a thinner foam. The integrated hood gives additional thermal protection to the head. The use of Flatlock Stitching technology is a guarantee of the highest quality stitching, which provides unparalleled durability to the product.