1. Material: Silicone 2. Net weight: 23g 3. Gross weight: 63g 4. Size: 52cm 5. Cleaning: can be boiled/steam sterilized 6. Applicable age: more than 3 months 7. It is not only a gutta percha but also an anti-dropping chain, soft and bite resistant 8. Free adjustment, comfortable 9. Double-layer buckle is firm and not afraid of pulling
