Custom Personal Protection, Ulla Smart Hydration Reminder - Health Monitor & Universal Fit, Ulla - the world's first hydration reminder bottle attachment! Drink 3-times more water, get healthier, have more energy and avoid headaches with Ulla - your personal hydration coach. Ulla can be mounted on water bottles of all sizes and materials. It can also be attached to any standard glass or mug. ... #ULLA $24.20/each.