Horizontal flexion grooves for an adaptive fit in different riding positions.
Alpinestars Nucleon KR-Cell Back Protector
Alpinestars Nucleon KR-Cell Back Protector Black
Alpinestars Nucleon KR-Cell Protector - Smoke/Black/Red
Alpinestars Nucleon KR-Cell Motorcycle Back Protector Breathable Sport Touring
Alpinestars Nucleon Kr-Cell Back Protector
