USCG APPROVED The O'Neill R&D process provides the best quality, fit and functionality in the industry. Our USCG life vests continue to set new standards of excellence in design for all wake and waterski athletes. Strategic Armhole Size Quick-Release Dual Safety Buckles Mesh for Drainage Zipper Safety Tab Segmented Foam Core Anatomical Flex Points Expansion Panels USCG/ULC Approved Overlock Stitched: Super-Strong Seam Filter Tech Outer Envelope 100% Polyester Lining Closed Cell PVC Marine Foam Heavy Duty Front Zipper | O'Neill Women's Reactor Uscg Vest in Black, Size 4, Polyester