Model Number: AB Type: Double-Wheeled Function: Body, Core Strength, Ab Builder, Back Strength, Rehabilitation, etc. Application: as show Name: ab wheel,fitness wheel,roda abdominal Use for: fitness,Sport Function: Belly Color: As shown Wheel height: 17.5cm Wheel thickness: 4.7cm Handle: 10.2 x 3.4c Overall Size: 25 x 17.5cm Weight: approximately 500g Knee Pad Dimension: 34 x 17cm Package Dimensions 24 x 19 x 9cm