Outdoor Products 2 L/64 Oz hydration bladder

“non-toxic cool gel insulated lining. Bladder has a quilted back evenly distributes cool gel so liquid is evenly chilled. Gel keeps liquid cold for up to 4 hours. Unlike ice cool gel chills liquid without diluting it. Fill the bladder and store in the refrigerator. Store empty bladder in the freezer, load liquid and go. Cold bladder can also be used as an icepack for small injuries.” 15” long, 7” wide. Used once for camping trip and since has been disinfected/drained.