O'Neill Men's Assault Blue Life JacketThis O'Neill Men's Assault Blue Life Jacket is constructed with a lightweight fluid foam neoprene shell and an integrated lumbar pad that will eliminate any stress on your back. 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. 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.Features: Concealed Dual Belt System; Segmented Foam Core; Overlock Stitching; Nytrolite Foam; Minimal Bulk Design; Fluid Foam Neoprene Shell; Integrated Lumbar Pad; Closed Cell Foam Structure; Lightweight; Anatomical Flex Points; 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"; ;