The AquaJogger Tri-Fit Swim Bar 30 inch is a versatile swim bar with moveable round foam discs that provides light resistance for a complete upper body workout. People with strength limitations will find this swim aid ideal for arm rehabilitation, useful as a balance bar for adults, or a flotation aid for children. The Tri-Fit Swim Bar is a versatile swim bar with moveable round discs designed to be used for different fitness and rehab applications. Moving the foam round discs along the bar allows the user to create a variety of new exercise options. The 30 inch long swim bar is supplied with two 6 inch foam round discs. People with limited strength will find the AquaJogger Tri-Fit Swim Bar provides light resistance for increasing upper body strength. AquaJogger Tri-Fit Swim Bar 30 inch Specifications: Measures: 30 inches long, 6 inches high. Color: White. Made in: USA.