I have a Deuter 3L but need something smaller. It was way cheaper. I got 2L and trained with it for 3 marathons and I don't know how many half marathons. I run daily and carry 1.5L or 2L Camelbak in a Nathan VaporHowe running vest. During the Arkansas summer, I fill my bladder with ice and water and wear it while I carry another bladder of ice water in the car. During a 20 mile run I wore one until it melted and then switched to a fresh one to keep my back cool. my back. It keeps me from freezing in the water. Because it costs so much less than a Deuter, I don't mind folding it into a running vest if I get hot. I lost it and am now ordering a new one because I used it every day. He held up great. I doubt you should wash it but it stunk and I did. (My fault I'm sweating so much)
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