Features Was developed based on the knowledge that air exhibits ideal physical properties for absorbing impact & shock By trapping air with specialized materials that offer flexibility & cushion, this technology delivers optimum comfort & lasting performance Each Air Cell is completely separate from its adjoining cell, ensuring the product remains fully functional in the event that a single cell is punctured The durable performance & aesthetic appearance of the finest top quality Lycra provides the ultimate finish for the patented Air Cell system Helps alleviate the weight & pressure normally associated with shoulder straps Non-slip strap