The Alpinestars Men’s Race Replica One-Piece Suit is made from 1.2-1.4mm premium, full grain leather for excellent abrasion resistance. The suit includes Alpinestars’ exclusive, patented high modulus, thermoplastic external shoulder protection; as well as a unique seamless elbow and arm construction. For knee protection, there is external one piece 90 degree TPU knee and tibia protection. This provides a soft grip area on the inner surface to improve contact with the bike. The knees are also covered by Alpinestars GP knee sliders. The Race Replica One-Piece suit has a Moto GP profile, ventilated back hump for improved aerodynamic and ventilation performance. The Alpinestars Bionic Race Back Protector is CE level 2 certified is supplied with the suit and attaches via a secure snap connection. For air circulation, the ultra-vented, frontal surface area provides maximum airflow. To improve comfort and reduce resistance Alpinestars has incorporated increased stretch Kevlar panels into the suit. The suit liner is 100% anti-bacterial, washable, and has strategically placed soft protection. The collar and cuffs of the Race Replica one-piece are lined with a soft neoprene. The zippers are YKK semi auto lock zippers. Don’t worry about the darker suits attracting heat on those warmer track days; the black and blue suits have been specially treated to reduce heat transfer in hot conditions. Check out the Alpinestars Men’s Race Replica One-Piece Suit, Alpinestars gear, and other racing suit options on our website: CompetitionAccessories.com!