Flexagon redefines the standrads of protective comfort technology. The exceptional flexibility is aided by overlapping layers of Crash Absorb memory retention foam that move independently of one another, an follow the anatmony of the body. Its ergonimic pattern of hexagon shaped soft pads provide comfort and maximum freedom of movement (6 slides, mobility on the 30, 90 and 150 axes) along with effective protection.soft Dainese back protector made in Crash Absorb. Material Crash absorb shape memory retention material Inserts in Crash absorb material on the rips Jersey Hole highly breathable, run-restiant mesh Comfort Extremely flexible protective structure Central zip Adjustable and removavle waistband Elasticated Jersey Holl Silicone rubber elasticated inserts at the waist Flexagon Technology back protector