+1 for Hydroflask. I bought a big one on a whim. Out of the store I started to get some buyers remorse when I realized that my hand couldn't span it, it wouldn't fit in my cup holder, probably kinda' heavy when full..
Then I took it along when we did the WABDR in the blazing heat for about a week. I ABSOLUTELY LOVE that flask! Fill it with ice water and it'll stay icy all day long. Does not have the silly straw thing that gets all manky after about a day. It holds enough that you don't have to refill it after every drink. One of my favorite pieces of gear.
-jim lee
Then I took it along when we did the WABDR in the blazing heat for about a week. I ABSOLUTELY LOVE that flask! Fill it with ice water and it'll stay icy all day long. Does not have the silly straw thing that gets all manky after about a day. It holds enough that you don't have to refill it after every drink. One of my favorite pieces of gear.
-jim lee