Alpinestars new technical professional spec one-piece racing leather suit, the GP Tech v4 Leather Suit uses feedback from Alpinestars rostrum of athletes to deliver race-grade technology in a suit optimized for performance, protection and comfort. Tech-Air® 10 ready (sold separately), this suit offers superior freedom of movement and high level of ventilation through the development of innovative new materials: MATRYX® ultra-abrasion-resistant and highly breathable zones, Cool-iR Tech treatment for the prevention of heat build-up, and DuPont� Kevlar® net bonding reinforcement for prevention of heat transfer.