From the manufacturer Over 50 years of family fun on the water Ever since we built our first ski, it has been our mission to create products that maximize fun on the water. Our passion for watersports has revolutionized all facets of the watersports industry: waterskis, wakeboards, wakesurf boards, SUPs, tubes and life jackets. Countless hours are spent designing, testing and perfecting each product to meet your needs and those of our athletes. Because of this, we know that you will love O’Brien products just as much as we do. O'Brien Aquatic Activity Stay Active Whether enjoying invigorating water exercises, relaxing in the pool or lake, or snorkeling in beautiful waters, the O'Brien Aquatic Activity Belt can help keep your buoyancy in check so you can stay focused on what you are doing. Its wide design provides added support while minimizing bulk, making it easy for you to move and allowing you to glide effortlessly through the water. The kwik-snap buckles easily lock into place and the belt cinches down in one motion, so you feel nice and secure. Size (waist measurement) Small 20"-26" Medium 26"-32" Large 32"-38" X-Large 38"-44" About this item COMFORTABLE & SUPPORTIVE FLOTATION – Soft, vinyl-coated foam provides reliable buoyancy while staying comfortable against the body during extended water workouts DEAL FOR WATER AEROBICS & POOL FITNESS – Designed to keep you upright and supported for aqua jogging, water aerobics, rehab exercises, and low-impact training ADJUSTABLE & SECURE FIT – Easy-adjust belt strap ensures a snug, stay-put fit in multiple sizes, allowing freedom of movement without slipping DURABLE, CHLORINE-RESISTANT MATERIALS – Built to withstand frequent pool use with high-quality foam and coating that resists wear, fading, and water damage LIGHTWEIGHT &