Used for about 5 days during hospitalization. Sterilized. For use after surgery, in cases of micrognathia, or when occlusion is difficult. The tip of the nipple can be cut to adjust the flow according to the amount the user drinks. The nipple is made of soft silicone rubber and is cross-cut. The bottle is made of a soft material (polypropylene). For babies or elderly people with weak sucking ability, the amount of liquid dispensed can be adjusted by squeezing the bottle. Please ask if you have any questions. Included nipple: silicone rubber, + (cross-cut) (Narrow-mouth nipple) Sterilization methods: Boiling: ○, Microwave: ○, Chemical solution: ○ Materials: Hood/Cap/Bottle: Polypropylene Nipple: Synthetic rubber (silicone rubber)