Size - 4 hair bands. Diameter:2 inch, Height:0.7 inch Premium Material - The outer layer of the hair band is made of high-quality elastic silicone, and the process is based on rigorous testing of tear strength and tensile strength. The soft silicone coating helps to hold your hair tightly without squeezing or pulling. Not Slip - The sturdy hair rope will provide you with a ponytail all day long without reorganization Very suitable for exercise, swimming and strenuous exercise, there is no slip hair off any more. Comfortable Design - There is a small pillow inside the non-slip silicone hair ring. The diameter of the strap is deliberately thicker, safe and stable, and will not easily shift or scratch the hair. It is an ideal choice for girls with ponytails. Wide Application - The ponytail tying with silicone hair ring is fuller, smoother, without wrinkles.It is suitable for all types of hair.It can be used in all stages from work to leisure.It is an excellent gift for friends and family on holidays.