SIZE 8 Grids Size: 85*4 cm/33.46*1.57in 10 Grids Size: 115*4 cm/45.28*1.57in 12 Grids Size: 135*4 cm/53.15*1.57in Note: it is normal if there is a little error in the size of elastic material Upgraded Elastic Band The Elastic Band is Made of Non-Toxic and Low Allergenic Materials.10 Grids 12-Grid Elastic Band has a Wider Stretching Range and Stronger Flexibility Multifunctional With Stretch Bands,Physical Therapy and Fitness Training all in One.The Multi-Ring and Elastic Design Allow for More Stretching of Your Movements.When You Want to Enhance Strength Training Reduce the Number of Elastic Band Loops, and You can Easily Achieve it. Visual Enjoyment Soft color tones, such as Peach pink, Ice blue, and Sakura purple, when matched with graceful movements, can bring a visual enjoyment to people.