Game changer - Black Diamond 500Ml Soft Flask

I’ve been a stalwart hydration bag user for 20 years, and I never liked how it was always buried in my pack or vest, a mystery of how much water was left. Soft flasks are the best; they’re able to stay in the front pockets of a running vest, and can still be refilled without having to remove them from the pocket. It’s fun to have the option of one water and one flavored bev. They’re light! Plus, the nozzle is an easy to use bite and sip; what people are familiar with. And they do this magical thing of keeping the air out of them (they form around to how much or little liquid is left) - easy to put snax in other pockets that are adjacent to the flasks. They’re also interchangeable, as in, if you have multiple vests or packs, they fit in that sort of pocket too.