O'Neill Women's Siren USCG Life Vest Neoprene^Polyester USCG Approved Personal Flotation Device; Perfect for Wake Sports, Waterskiing, Tubing, and Swimming Minimal Bulk Design Allows Full Mobility And Anatomical Flex Points Enable Unrestricted Movement Lightweight Fluid Foam Neoprene Shell Has An Integrated Lumbar Pad for Support Concealed Dual Belt System With Quick Release Safety Buckles Snug Fit For The Performance-Oriented Wakeboarder Or Waterskier Looking For A Life Vest Which Won't Move During High Impact