Features: Don`t need to use electric iron, so the hair damage become less. No trace, easy to operate. People who don`t like complicated operation are strongly recommend. Light and convenient, easy to carry. Washable and reusable. Specifications: Amount Size Diameter 5pcs big 5cm/1.97" 5pcs small 4cm/1.57" Material: silica gel Weight: about 100 g (with package) Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color which is showed on the picture. Thank you! 2. Please forgive 1 cm/0.39"-3 cm/1.18" measuring deviation due to manual measurement. 3. Very welcome to contact our dear customer service staff if you would like to know more about our product!