Just a super water bottle - keeps tight, acts indestructible (lintels not even cause a scratch) and can be easily cleaned with hot water or in the dishwasher. Maybe a drawback for some: you can experience, in no Trinkflaschenhalter make, because it is wider than ordinary water bottles - which applies only to the tested by me size. At the university in any case run each / r Second with a Nalgene around :)
