Sold as a set of two. --------------------------------- Introducing the "NANOBULE Shaking Bottle"! A water bottle that generates nanobubbles just by shaking it! The world's first nanobubble water you can make by shaking. You can feel the difference even with your eyes closed. Economical with tap water, and good for the environment by eliminating the need for plastic bottles, contributing to the SDGs. 【When to Use】 ・For everyday use at home, work, school, or while traveling. ・For hydration during sports or at the gym. ・Not only for mineral water, but also for sports drinks, protein shakes, green juice, etc. ・For mixing with alcohol, tea, or cooking rice.