Features:High-quality materials: The hydrogen water bottle is made of high-quality materials, which is wear-resistant and durable, not easy to break, and can be used for a long time.Large capacity design: This hydrogen water bottle has a capacity of 401-500ml, which can produce a large amount of hydrogen-rich water at ones time to meet your water needs for the day.Easy to carry: This hydrogen water bottle is ergonomically designed, easy to drink and carry, perfect for work, sports, hiking, traveling, etc.Rapid hydrogen production: It only takes a few minutes to get healthys hydrogen-rich water, which can replenish the body's needs for a day in one go.PERFECT GIFT CHOICE: This hydrogen water bottle is easy to use, making it a perfect gift choice for friends and family on Christmas, birthdays and other holidays.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementMaterial: high borosilicate glassSize: 21*7*7cmCapacity: 401-500ml