Simply one of the most comfortable back protectors on the market, you will barely notice you are wearing it. Atomic’s AMID (Atomic Multi-directional Impact Deflector) material absorbs energy on impact, dispersing it evenly; the tubular foam flexes easily and adapts to the shape of the body. elasticated air mesh and 4-way Lycra make the vest highly breathable; the front zip and height adjustable belt keeps the spine protector securely in place.Protection: Back protector passes Level 2 safety standards for spinal protection, the highest rating.