- Flexible chamber that doesn't take up unnecessary space when emptying.
- The big opening for refilling with water is advertised as being easy to use. It is easy to fill, but very tricky to close the twist on lid, and almost impossible to close without spilling some water. The problem is partly that the arrows don't line up with where the the lid starts to screw shut. Furthermore the lid can appear shut when it is screwed on at an angle resulting in leaks. I brought two, and both have the same issue.
Published on: 03 August 2015