- Professional Race Leathers Pre-Curved Suit - Durable 1.2 -1 .3 Mm Premium Full Grain Leathers Chasis - Double & Triple Stitched Seams At All Impact Areas - Strategically Placed Stretch Elastic Panels In Arms, Crotch, Back Knees And Calf( Keprotec Upgradable ) - Multiple Accordion Flex Zones For Comfortable Ride - Dynamic Race Aero Hump - Vented Heavy Duty Summer Mesh Liners - CE Protective Armors At All Critical Zones.