Alpinestars Nucleon KR-R Cell Back Protector Size:M thus avoiding back overextension of

thus avoiding back overextension of the ankle joint and protecting the riders’ foot from injuries

Thanks to the inner space set for the microphone and speakers

The perfect motorcycle reinforced jean for on or off the bike - made from the highest grade woven Kevlar® in the seat

Pre-curved finger construction to reduce riding fatigue

Alpinestars Nucleon KR-R Cell Back Protector Size:M thus avoiding back overextension ofThe Nucleon KR R hybrid back protector is an innovative track and race back protector. With performance cooling, flexibility, and anatomical contouring, this hybrid of hard shell and energy absorption viscoelastic memory foam is lightweight and breathable for optimized protection and comfort. Features include waist adjustment for a customized fit, a snap on system to fix the protector to a suit or jacket, and a slim vented kidney belt for added