Based on 400 key fitting points, this SKINS TRI400 Men"s Compression Tri-Suit is cut for comfort while swimming, cycling and running. Dynamic gradient compression helps accelerate your blood flow to get more oxygen to your active muscles. Flatlock seams ensure reduced drag in the water, optimal compression, fit, muscle wrapping and comfort. Swim: Panels of strategically placed TRI400 fabric minimize drag and aid performance in the water. Bike: The ultra-lightweight TRI400 Elastic Interface® Technology chamois is designed specifically for triathletes looking for maximum comfort and performance. Run: Strategically placed carbon-infused fabric panels between the thighs mean less chafing, more comfort and a better performance during the final stage of the race. 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.