Alpinestars Back Protector Nucleon Cell KR-R, L

The 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 security.