Nalgene 32oz Wide Mouth
Nalgene is the origional trail blazing waterbottle. This 32oz bottle will keep you hydrated all day, and after a long day it is completely dishwasher safe.
Pro tip: on cold nights in the backcountry, boil water just before going to bed and fill your Nalgene bottle. Put the warm bottle at the bottom of your sleeping bag to help get toasty warm.