1. Material: silicone 2. Skin-friendly and soft, comfortable to use 3. Adjustable size, easy to wear 4. Easy to clean design, not easy to leave stains 5. With 3D leak-proof groove at the bottom, large diameter 6. Folding without traces, not easy to deform, travel storage does not take up space 7. Size: 23x32cm 8. Weight: about 80 grams
