The Hyperlite Caliber Vest is approved by both the US Coast Guard and Transport Canada as a "Life Saving Device." The Caliber Vest has received rave reviews as the best fitting and functioning life jacket on the water today. With amazing comfort and supremely engineered segments, this vest performs at the highest caliber. Protect yourself in style, stay safe on the water, and ride like you never have before with the freedom and flexibility of Hyperlite's newest approved life jacket.• Harmonized Approval US Coast Guard and Transport Canada• Personal flotation device• Bevel-flex shoulder pattern• 17-panel architecture for advanced range of motion• Concealed belts with lower V-back design• Tapered waist with broad shoulders• Neoprene + Speed Skin is fast drying and lightweight• Men's Chest Sizes: S(32"-36"), M(36"-40"), L(40"-44"), XL(44"-48"), 2XL(48"-52") | Hyperlite Men's Caliber CGA Life Vest Medium | The House