1) fit and compatibility The teat attachment features a precise thread design for easy integration into most bottles. Eliminates concerns about size and ensures smooth use for different drinking preferences. Suitable for children and adults alike. 2) Safe drinking experience Antichoking design protects sensitive areas, reduces choking risks, and provides a consistent drinking experience. Water flow is precisely tuned to ensure an level of safety and comfort. Ideal for everyday use, offering reliable protection in one compact opening. 3) Durable materials and safety Heavyduty drinking bottle suction cap crafted from foodgrade silicone and PP. Completely harmless, odorless, and from health concerns, so you can use the suction cap with confidence. 4) Leakage protection and portability Sealing ring and locking function prevent leakage when tipping over. Keeps bags and clothes dry; easy to carry and suitable for everyday use. Innovative technology provides safety with every movement and protects delicate items from moisture. Practical use scenarios Everyday use with kids at home, school, or daycare: fits a wide range of bottles and supports safe, consistent drinking. Onthego and travel: prevents leaks in bags and backpacks, making it reliable for commutes, errands, and flights. Outdoor activities and workouts: suitable for hiking, camping, gym sessions, and other activities where secure, spill bottle access is valuable.