Review on Source Outdoor Hydration Reservoir Transparent by Tim Kallimanis

Works well. It resists taste and clutter and has a nice cap to keep the mouthpiece clean. I've been hunting in very hot weather and the water in my pack stays surprisingly cool. It's also quiet because it collapses when you drink the contents instead of creating an air space to make squeezing noises. Plus, you'll be more hydrated because you don't have to stop drinking. It also has a neutral taste. If it has one downside, it's that it's very difficult to dry drain and store. I haven't had it for so long, but it still seems to resist odor development.