Very comfortable spine protector Bliz BACKBONE BACKPROTECTOR UNISEX represents the latest back protection technology with fully breathable mesh material and ergonomically shaped foam insert. Protective plate is made from a unique material which makes it soft and flexible, and in case of an accident it firms up and absorbs the impact for a high level of protection. The adjustable waist strap fastens with a velcro strap and it can be shifted up an down to fully adjust to your body.