Description: Made of foam and pvc material, safe and comfortable. Lightweight and compact design,convenient to use and easy to store. Effective toning for thighs, triceps, buttocks, hips and arms. High strength spring-loaded steel core, covered with soft foam, more durable. Suit for all ages and fitness levels. Specification: Material: PVC, Foam Single Side Length: 23cm / 9.1inch Foam Diameter: 3.1cm / 1.2inch Package Includes: 1 Piece Thigh Master Leg Exerciser Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!