The AquaJogger® Active Flotation Belt for water exercise was originally developed as a water rehabilitation tool for pre and post-surgery patients and world class athletes recovering from injury. This buoyancy belt allows the wearer to maintain an upright posture in the water, strengthening the core abdominal and low back muscles through their continued use. The AquaJogger Active Belt is the most economical model designed for people of all abilities, providing extra flotation and support for aquatic aerobic exercises. The patented water flotation belt comes with an easily adjustable belt strap designed to accommodate up to a 44 inch waist size. Made from soft and flexible closed-cell foam material that does not absorb water, the belt is quick drying and resistant to the effects of chlorine. The AquaJogger Active Water Flotation Belt is ideal for deep water exercise activities. The innovative design provides complete comfortable support for the lower back. A simple to use quick-release buckle secures the non-elastic web belt that fits waist sizes up to 44 inches. The soft and flexible foam material narrows at the waist to provide superb comfort and freedom of movement for an impact-free water workout. AquaJogger Water Workout Guide Instructions AquaJogger Active Flotation Belt Specifications: Belt: 48 inches long, fits up to a 44 inch waist, non-elastic. Buckle: Quick-release style. Foam measures: 24.63 inches long, 3.5 inches high in center, 1.25 inches high at ends, 1 3/8 inch thick. Made in: USA.