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. USCG Approved Type III Front Zip Strategic Armhole Size Minimal Bulk Design Concealed Dual Belt System Quick-Release Dual Safety Buckles Integrated Lumbar Support #10 YKK Zipper with Safety Tab Closed Cell PVC Marine Foam Lightweight Fluid Foam Neoprene Shell Overlock Stitched: Super-Strong Seams Segmented Foam Core | O'Neill Women's Siren Uscg Vest in Blk/Dayglo/Turq, Size 10