Review on Osprey Raptor 10 Men's Cycling Hydration Backpack by Willie Midkiff

I'm sold, will never buy another MTB water bag/bag while it's still around. It bothered me that I saw a few reviews about the water bag losing its chill. I just drove through Dallas in July and have no more issues and don't feel the need to buy extra isolators. Yes, a little in an open test tube, heats up, spit it out, and the next is cold. I just find it a shame that you waste a little, but I mostly use the first one as a swisher and then the next sip is cold enough. The helmet mount is perfect if you have an expensive helmet and are concerned about it scratching or tipping over during long breaks. These are the best.