1. Double seal design for leak prevention - Rubber gasket and a double seal design prevent water leaks, keeping the cage dry and making cleaning easier. Built for long-term use. 2. Smooth water delivery with anti-backflow - Delivers consistent, regulated water through a specially developed rollerball system that mirrors hamster drinking behavior, while anti-backflow technology helps prevent accidents. 3. Enhanced play and hideout - Adapts to uneven cage surfaces and encourages exploration and play, while also serving as a cozy hideout for extra comfort and safety during activity. 4. Ergonomic drinking design - Thoughtful body-close shape and a curved drinking spout make the bottle easy to use, promoting a relaxed drinking position and supporting proper drinking habits for small animals like hamsters. Usage scenarios - Everyday hydration in a standard hamster cage: reliable water access while maintaining a dry, easy-to-clean habitat thanks to the leak-preventing design. - Habitat enrichment: the design promotes exploration and play, and the built-in hideout provides a safe, comfortable retreat during activity. - Training and routine hydration: the ergonomic spout facilitates a natural drinking posture, helping hamsters establish healthy drinking habits.