The camelbak quick stow chill collapsible flask this lightweight collapsible flask keeps your water cold 2x longer without the extra weight and bulk of traditional insulated bottles the quick stow chill fits snugly in the front pockets of all camelbak running vests and collapses for easy storage once itrsquos empty the extra wide mouth also makes it easy to refill on the fly especially if yoursquore adding ice or drink mixes and our classic one piece silicone bite valve offers a