Size Conversion Inches Centimeters Please according to your own measurements to choose your suitable size. The tags inside the items will show in our Asian (Type) size. Specification: Material PP Plastic Shape Round Color Green, Blue, Red, Black Quantity 3Pcs / Set Features: - Work great on carpet and hard floors. - You can take them anywhere with you while travelling. - Whole body workout to fit all parts of your body. - Lightweight, portable and easy to use. - Sport-Specific training with the fitness gliding discs you can train to a big variety of sports like: skiing, Skateboarding, Surf, and all the others sports that needs a bigger stability. - Core Sliders engage your core muscles throughout the full of motion of an exercise while introducing a balance challenge. The long, graceful movements are also a good way to increase flexibility. - These small discs can broaden your distance of exercises while reducing your risk of injury. If you are looking for core toning exercises, you may have found your secret. Package included: 2 x Fitness Gliding Discs 1 x Elastic Ring Note: 1. Please allow 0.5-1cm differences due to manual measurement. 2. Due to the light and screen difference, the item's color may be slightly different from the pictures.