I already have two bottles and they've served me for some time. The only reason why I am not giving it a 5 stars is because it's hard to clean the bottle and the cap gets the moldy black color inside even though I clean it often (it can never be cleaned to look as the first time when you use it). I think it's because of the material of the cap. Nevertheless, I haven't found better water bottles for now, so I would recommend them.