I've got a couple, been using them for a year and they have stood up well to all abuse. Hang them off my travel bag and nothing has broken on them. Put them in the dishwasher every once in a while to thoroughly clean them. Bite valve works well and haven't had any leaking. The only problem is sometimes I forget to screw the cap back on after filling it and then grab the bottle by cap spilling most of the water. I have the .5L and .75L. Not insulated so water reaches ambient temp pretty quickly.