The Ladies Aqua Sphere WT80 Shorty Suit is part of their Aqua Skins collection which uses Thermo Guard Technology. This technology is to reduce the speed at which body heat is lost in water. It is comprised of Glide Skin neoprene which offers superior comfort and flexibility. The WT80 is suitable for use in water temperatures of 80 degree Fahrenheit (25 degree Celsius) or warmer water temperatures. The suit is great for swim fitness as well as a host of other in-water activities.