O'Neill Men's Assault Graphite Life JacketThis O'Neill Men's Assault Graphite Life Jacket is constructed with a lightweight fluid foam neoprene shell and an integrated lumbar pad that will eliminate any stress on your back. With a segmented foam core with anatomical flex points and overlock stitching, this men's life jacket will provide long lasting use and durability while the concealed dual belt system adds extra security. The jacket is designed for extreme comfort with its Nytrolite foam construction. This foam is 3 times lighter than regular PVC foam and it will absorbs 15-20% less water due to its closed cell foam structure. Features: Overlock Stitching; Segmented Foam Core; Nytrolite Foam; Fluid Foam Neoprene Shell; Anatomical Flex Points; Integrated Lumbar Pad; Minimal Bulk Design; Closed Cell Foam Structure; Concealed Dual Belt System; Lightweight; Strategic Armhole Size; USCG Approved ; Sizes: Medium: Chest Size: 37" - 39"; ; Large: Chest Size: 39" - 41"; ; X-Large: Chest Size: 41" - 43"; ; XX-Large: Chest Size: 43" - 45"; ; XXX-Large: Chest Size: 47.5" - 50.5"; ;