Looking for a warm wetsuit? The 5mm wetsuit is a great choice if you are looking for a wetsuit that keeps you warm in colder waters and the colder days. Regularly a 5mm wetsuit is recommended from fall season to early spring until the water is warming up thanks to warmer temperatures. Every wetsuit has different features and some 5mm wetsuits are a lot warmer compared to other ones. The most important feature of a wetsuit is how it keeps warmth inside and water outside of the wetsuits. Usually the higher the price-tagg, the warmer the wetsuit will be. Another very important thing to keep in mind is the fit. A 5mm wetsuit needs to fit like a second skin.