It is a very stable, easy to install and versatile, and convenient to carry abdominal wheel, so you can work and exercise at home. Characterized by an oval shape for stability and non-slip handles for comfort, this abdominal wheel delivers excellent fitness equipment for strengthening muscle groups. It is constructed of abs material. The length of this product is 34cm, the width is 21.5cm and the height is 10cm. It is designed to work and build the abdominal muscles. Item Name: Abdominal Wheel Material: ABS Features: Mute, Strong Bearing Force, Wear-resistant Size Details: LxWxH: 34cm x 21.5cm x 10cm or 13.39" x 8.46" x 3.94"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Abdominal Wheel 1 x Knee Cushion Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.