1.3 mm premium-grade leather for high-performance impact and abrasion protection, Stretch panels on the sides of the torso, arms, crotch and back of knees improve fit and feel, External Alpinestars exclusive Dynamic Friction Shield (DFS) technology shoulder, elbow and knee protectors, Alpinestars one-piece, GP-R knee/shin protector feature a floating construction for precise fit, Aero hump for improved aerodynamic and ventilation performance, Large accordion stretch panels help rider movement and comfort on bike, Removable/washable mesh liner, Inner waterproof pocket, Innovative calf expansion gusset improves range of fit and riding comfort, Chest pad compartments with Polyethylene (PE) padding, Integrated PE foam padding on chest, hips, coccyx, upper arms and back, Multiple snap button system to integrate Alpinestars Nucleon protector, Neoprene comfort edge around collar and cuffs prevents skin chafing, Alpinestars Polyurethane (PU) Sport knee sliders, Class-leading protective capabilities – internally and externally, Removable CE-certified, race-developed GP-R internal protectors offering lightweight performance and superior impact protection to shoulders, elbows, knees, tibia and shins, Alpinestars’ new, exclusively developed shoulder GP Dynamic Fiction Shield (GP DFS) protector is anatomically contoured and incorporates a triple density polymer compound for improved performance in crash slides. The GP DFS protection is ergonomically designed for improved upper body flexibility and features over-injected mesh air inlets for excellent airflow, Anatomically profiled elbow protector made from dual density polymer compound for excellent impact protection and abrasion resistance, Dynamic Fiction Shield (DFS) knee protection and GP knee sliders offer additional abrasion resistance in a key impact area, Snap connection system allows integration of CE level 2 certified Nucleon Race Back Protector for the ultimate in protection, Chest and back pad compartments (CE certified Nucleon chest and back inserts available as accessory upgrade), sold separately, Garment comes supplied with anatomically profiled and removable Nucleon hip protection