Simply put, wetsuits exist to keep you warm in the water. Most are made using a synthetic rubber called neoprene, that has very tiny holes in it that allow water in but not out. Because water is a great insulator and conductor of heat, the wetsuit works by trapping a thin layer of water between your skin and the neoprene, which is then subsequently warmed by the natural heat from your body. Alongside the suit itself, this warm, thin layer acts as an extra layer of insulation, keeping your body temperature up.
Wetsuits also give you extra manoeuvrability in the water because their tight fit is like a second skin, reducing drag and adding buoyancy. You’ll feel more athletic and smoother in your movements when wearing one. If your adventure bucket list includes open water swims, catching some waves, or just generally spending a good chunk of time in the wet stuff, a wetsuit is a must-have addition to your adventure set-up.