Review on Lightweight Hydration Backpack with 2L BPA-Free Bladder for Running, Hiking, Climbing, Biking, Cycling, and Skiing - MIRACOL Hydration Pack by Redfish Rosenhoover

I ordered three of these for my sons to use on their bike rides. So far I'm very happy with them. There are a few very small things that could be improved, but overall it's exactly what I was looking for. Lightweight, easy to clean, very comfortable, easy to use. The outer material that makes up the front of the backpack is very thin, so it's likely to tear easily if you're not careful. The insulation works very well, I put a small ice pack along with the bladder and it stayed cool throughout the 3.5 hour ride on a near 80 degree day in the sun. When the hydration bladder is full, there isn't much room for anything else, but you can fit keys, a route map, a granola bar or two, and a few small first-aid items. But that's all. So it's great for a trip or hike that only lasts a few hours and close to civilization for the supplies available. The only really disappointing feature of this bag is the built in emergency whistle. I like the idea but the whistle only works on 1 of the 3 packages we received.