Wetsuit (neoprene exposure suit)

A wetsuit is a tight-fitting garment made of synthetic rubber. It works by trapping a thin layer of water against your skin. Your body heat warms this water so that you stay comfortable. You will use different thicknesses depending on the local water temperature. In Koh Tao, a 3 mm suit usually suffices for most year-round dives. However, I used a 5 mm suit during my 2018 trip to Komodo because the currents were cold. A common mistake is buying a suit that fits too loosely. If the neoprene gaps at your waist or wrists, heat escapes quickly. Always check the seals for cracks before you buy used gear. A tight fit is vital for warmth.