M-Pets Flaska water bottles have a leakproof double ball bearing design. Water bottles should be re-filled daily with fresh water. Periodic cleaning with tepid, soapy water is recommended, just rinse thoroughly before re-filling with fresh water. Includes wire attachment to fit any cage Easy to read measurements in milliliters on side of bottle Ships in assorted colours. **Price is per individual water bottle** Available in 4 sizes: X-Small (50 ml) Small (100 ml) Medium (240 ml) Large (450ml)