Both types are designed to keep sun and water away from your skin, but there are a few differences between the two. A diving skin is typically made from a type of spandex that is incredibly thin and lightweight and feels just like a second skin. They are basically like a rash guard that covers up the majority of your body. These are great if you don’t intend on traveling too far under the water, or are swimming in waters that are generally warm. Wetsuits, on the other hand, are a little thicker and heavy duty. They are designed for divers that are jumping into cooler waters and need something to retain more body heat. Wetsuits are usually a lot more expensive than body skins, so take into consideration what types of waters and conditions you will be using it in before taking the plunge.