Poc spine vpd system vestpoc's spine vpd system vest is a flexible and moulded back protector with the highest level 2 1621 2 certification. The woven back fabric uses monofilament threads and a kevlar reinforced barrier to establish resistance and anti penetration which provide maximum abrasion resistance.the vest also features extreme ventilation channels for maximum moisture control, an internal waist strap and a chest pocket.featuresmoulded back protector with extremely flexible hexagon geometryventilation channels for optimised moisture controlkevlar reinforced spinal area for anti penetration protectionzone based ventilation systeminternal waist strapchest pocketen1621 2 level 2 certified back protectorbuy poc protection from chain reaction cycles, the world's largest online bike store.