DUI TLS350 drysuit. Lightweight & fast drying - excellent for recreational divers. One of DUI’s most popular drysuits for recreational divers! The trilaminate fabric consists of nylon/butyl rubber/nylon makes it lightweight, fast drying and ideal for travel. It is also the drysuit of choice for underwater photographers, deep cave exploration and the US Navy SEALS. By varying the insulation underneath, you can use the TLS350 in the warm waters of Florida to the ice-covered seas of Antarctica.