Specs Size: S M L and XL. Standard: NIJ IIIA; uhmw-PE / Kevlar, aramid fabric; Front & Back protection; ; Unit weight: about 1.9, 2.0, 2.1, 2.2kg ; Protection area: 0.25, 0.28, 0.30, 0.32sq.m.Material of Shell: Oxford, Cotton or requested Fabric, Adjustable sides & shoulders and upper straps with Velcro;