SKINS TRI400 Men"s Compression Sleeveless Tops feature dynamic gradient compression to help accelerate your blood flow to get more oxygen to your active muscles. Based on 400 key fitting points, the SKINS TRI400 range is cut for swimming, cycling and running comfort. Strategically placed panels of TRI400 fabric on the front of the top minimise drag and aid performance in the water. Memory MX Fabric panels in the back of the top provide targeted gradient compression, while also allowing maximum lateral movement during the swim leg. Other features include semi auto lock front zipper for temperature control, lined zippers and zipper guards for comfort, and two pockets with bonded flaps to eliminate drag in the water. Flatlock seams ensure reduced drag in the water, optimal compression, fit, muscle wrapping and comfort.