Nylon Imported US Coast Guard Approved: This personal flotation device meets USCG requirements. Less bulky design for use when quick response is likely and offers a larger range of motion Open Sided: Open sides allow for better ventilation to keep you cooler throughout the day. Designed for personal watercrafts and general boating safety Buckles: Three body belts with buckles. Side release buckles open and close quickly to ensure safety and security on the water Material: Soft UV and stain resistant 200-denier polyester shell with lightweight Poly-E flotation inside Sizing: This life vest follows the sizing determined by the USGC and is designed to fit youth that weigh 50-90 pounds and have a 26-29-inch chest size