This demonstration video discusses and shows the features of the Hyperflex by Henderson 6 Oz Short Sleeve Rash Guard. The rash guards are made of 6 oz Lycra and are very lightweight and durable. They can be worn by themselves in warm water or under a wetsuit for added warmth. In addition to preventing rashes, these rash guards help protect you from the sun´s harmful UV rays. They are not only for scuba diving; they work well for snorkeling, layering, and working out just to name a few other uses. The Hyperflex Rash Guards come in either loose fitting or standard fitting.