Keep your water refreshingly cold during your runs, walks and hikes with the Drankful Insulated Reservoir Sleeve. The Drankful Insulated Sleeve keeps your water colder for longer by creating a barrier, keeping your natural body heat from warming your fluids. It easily slides over your hydration bladder like a jacket and the low-profile design fits snugly into both the Drankful Adventure Pack and Hip Pack. Plus, it doubles as a storage sleeve for your valuables if you’re using it without the reservoir, and you can even use it to store your cell phone during cold weather to prevent the battery from draining fast. Stay cool, hydrated and organized on your runs and adventures with the Drankful Insulated Reservoir Sleeve.