The U-S-Divers-Mercury-Shorty-Wetsuit is a half wetsuit for being in the water when the weather is warmer. The short sleeves and short bottoms give you more mobility for warmer waters. The US Divers Mercury wetsuit has 3 mm chest panels and 2mm side panels made of a titanium blend material. This material is able to keep the body warm by reflecting heat back to the body. The underarms have stretch panels which provide an excellent range of motion. The wetsuit has flat lock stitching, which makes the suit more comfortable to wear, especially for long periods in the water. The zipper is made of a corrosion free material with a pull cord. It also has a double tap hook and loop tie down which seals the suit in the back. The U-S-Divers-Mercury-Shorty-Wetsuit has Neoskin seals on the neck, wrists, and legs which seal out the water, allowing the swimmer to remain warmer for a longer period of time. The suit is available in medium, medium/large, large, and X-large. It also comes with a 2 year warranty.