I used a vapur for a while but when it started to fall apart, I bought a hydaway collapsible silicone bottle with holder & carabiner that clips to my bag. Much more durable than the vapur (though I still like that flexible plastic for a trip where I might toss it at the end and not bring back home- we bought a 6 or 12 pack "store brand" of that style from a big home improvement store). At home I use camelbaks (have plastic, glass & metal options.) I drink about a gallon of water a day so I have water bottles or insulated sippy cups with me all the time ;-)