bite valves get loose and easily damage with children, this makes then leak which can cause a really big mess if you're dont pay attention to how you set it down. the plastic flip piece breaks easily if you forget to close it. safety torx makes it a tough fix. the 1 liter version has a base that is too thick for many holders but defnitely not as thick as some of the nalgene's. sturdy and shatter resistant but scratches are easily visible under sunlight. the convenient straw is an inconvenient clean.For a bottle on the go, I'd suggest a generic flip top. Much more convenient to clean and easy to open with your teeth.I currently use my bottle with the classic lid just to put in the office