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 Closed Sided: Offers a tighter and more secure fit to keep your life vest in place. Designed for water sports, personal watercrafts and general boating safety Buckles & Zipper: Side release buckles open and close quickly while the zipper is easy and quick to fasten to ensure safety and security on the water Material: Quick-drying and super soft. This fabric keeps you comfortable and dry all day long Sizing: This life jacket follows the sizing determined by the USGC and is designed to fit adults that weigh over 90 pounds and have a 36-39-inch chest size. For your convenience, please know that the Neolite life jackets may feel snug or run a little small. If you are unsure or in between sizes, we would recommend choosing the larger size