Poc spine vpd system vestpocs 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