I am satisfied with the Nalgene bottle. They should serve as a smaller alternative to my 1L Nalgene bottle, which is somewhat large in daily use. The volume with about 0,7 l is practical and the size of the bottle super. Unfortunately, the closure seems to me not very secure, since it is relatively easy to unfold. There is another version in which the lid is additionally secured by a strap, but I have noticed too late the difference. This additional bracket would probably give me a more secure feeling. So I have always transported upright unfortunately.