Dry Cage System: A double sealing structure with a rubber gasket keeps the cage environment dry and simplifies cleaning and maintenance. Roller Ball Water System: A roller ball dispensing mechanism provides even flow, mirrors hamsters natural drinking behavior, and includes an antibackflow function to reduce choking risk. Flexible OpenBottom Base: Openbottom design allows flexible placement in any cage, supports exploration and play, and provides a cozy shelter for rest. Comfortable Hydration Outlet: The bottle features a bodyconforming shape with an ergonomic curved drinking outlet for a comfortable drinking position and healthy hydration without discomfort. Use scenarios In a standard hamster cage, an older bottle with this system to maintain a dry enclosure, reduce spills, and ensure steady hydration with a natural drinking action. In a larger or multi hamster habitat, place the openbottom base in a strategic location to encourage exploration and provide a nearby resting spot while staying hydrated. For arrivals or shy hamsters, the ergonomic outlet and consistent flow help promote comfortable drinking and reduce stress during acclimation while keeping hydration easy to access. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.