[n] - a close-fitting garment made of a permeable material
a garment, usually made of foamed neoprene, that provides thermal protection thanks to the bubbles of gas enclosed within the material. In addition to thermal insulation, wetsuits also provide abrasion resistance and buoyancy.
noun a close-fitting garment made of a permeable material; worn in cold water (as by skin divers) to retain body heat
A tightly fitting neoprene thermally-insulating diving suit that allows a limited volume of water inside the suit.