In my experience, the sippy tops and the straws on the u003ca href=u0022http://amzn.to/2mlbShfu0022 target=u0022_blanku0022 rel=u0022noreferrer noopeneru0022u003ePura Kikki Stainlessu003c/au003e kid's water bottle are hard to clean and they need to be replaced fairly often. It's farther down on my list for those reasons, though the stainless steel base of it is fantastic—and that you can get a flat top and use it as au003ca href=u0022https://amzn.to/2RIHLmsu0022 target=u0022_blanku0022 rel=u0022noreferrer noopeneru0022u003e storage containeru003c/au003e after the kids are done with it. And people love it!