fit and compatibility: A precise thread design allows seamless attachment to most bottles, removing size concerns and delivering smooth use for various drinking preferences. Suitable for both children and adults. Safe drinking with controlled flow: The antisuffocation straw holding structure protects the mouth and throat while effectively controlling water flow to reduce choking hazards. Provides a reliable solution for daily hydration that is practical and safe. Durable, safe materials: Made with foodgrade silicone and PP to ensure safe chewing, with no health risks or unwanted odors. The robust construction adds extra safety for everyday use of the water bottle. Leakage protection and portability: Features a sealing ring and locking function to prevent leaks when tipping or moving. Keeps bags and clothes dry, while the bottle attachment remains easy to carry for everyday use and travel. Use scenario: At school or daycare, the design helps ensure safe, controlled drinking for children during breaks or activities. Use scenario: While commuting, traveling, or outdoors, the leakproof design minimizes spills in bags and on clothes. Use scenario: In the gym, office, or home, the compatible attachment provides convenient, mess hydration with reliable flow control.