Function - This premium core strengthening wheel helps build and tone your abs, arms & back. Effectively work out your core at home, the gym, or the office.Advanced Design - Ergonomic hand grips made of high density ABS material, design with non-slip uneven patterns, which is sweat and water resistant.Upgraded Stability - The wheel is 4'' thick, while other brands are half that size. This gives you superior stability, allowing unrestricted movement for a more intense workout.Easy to Store & Carry - Removable handles allow for compact storage and easy transport.Easy to Use - Soft and Wear Resistant rubber ball will keep no noise and sound when work out, convenient for use in home and office.Specification:Material: ABS, RubberWeight: 2.2lbs, 1.0kgLoad-bearing: 550lbs, 250kgBall Diameter: 3.9inches, 10cmSize: 18.5 x 7.9inches, 47 x 20cmPackage Details:1 x Ultra Flex 360 Ab Wheel