Diving wetsuits – how do they keep you warm
Thursday, April 9th, 2009Is a wetsuits just a wetsuit and are all wetsuits made the same? Can you use a wetsuit that is meant for diving when you go swimming, surfing, windsurfing etc…? To some point you can, wetsuit is designed to keep you warm no matter for what sport it was originally meant. But on the other and wearing a wrong wetsuit can be limiting.
Two the most important things when it comes to wetsuits are warmth and fit. Warmth is decided by the thickness of the neoprene and it must be chosen by the location where the wetsuit will be used. Are you going swimming, snorkeling and diving in the tropics or are you going somewhere where the water is really cold? The other thing is the fit. If your wetsuit is to big it will not be warm no matter what, so the right fit is essential.
To take an informed decision, you need to understand how a wet suit works. Wet suits are basically made from neoprene, which is a highly porous material that contains millions of tiny little bubbles. Neoprene uses the nitrogen bubbles to create a barrier of air between the water around you and your body. A thin layer of water enters this barrier and gets heated up to your body temperature. As you reach greater depths, the suit starts getting looser as the Neoprene compresses against it self. When this happens, any water that may have entered, leaks out. At the end of the day, the wet suit must protect you and keep you warm.
Water temperatures keep changing. The change with the seasons, the change with the location… So you have to know when and where are you going to use your wetsuit to choose the right one. Wetsuits are also a bit different if you are a man or a woman.
Women should always get a little warmer wetsuit than a man for the same water temperature. Why? Because womens body has comparatively more surface area then mens body. This is why women get cold faster. Also – a general rule is that a warmer wetsuit is more practical since if you feel warm you can always let some cold water in to cool you down but if you feel cold there is not much that you can do.
The other thing to keep in mind is that a two-piece wet suit is likely to keep you warmer than a one-piece wet suit. The two-piece wet suit has the benefit of double insulation around the groin and chest areas. However, double the insulation also leads to greater restriction in movement and greater buoyancy, which would require you to carry more lead, than you would have to in a one-piece suit of similar thickness.
Now that we have covered the thickness of your wetsuit in relation to the water temperature you need to focus on the fit. Wetsuit needs to fit you, if it is to big, it will fill with water and loose much of its insulation capabilities. Only the right thickness and the right fit will keep you warm and let you dive without the fear of cold.