Natural and safe to use, the 2-pack of 10-Liter and 3-pack of 5-Liter Natural Flavored Oxygen Bottles from Boost Oxygen provide supplemental oxygen wherever you need it. Boost Oxygen offers pure, natural respiratory support without caffeine, sugar, or other stimulants. This non-prescription oxygen helps support daily activities and overall wellness. The compact 5 and 10-liter canisters are convenient for travel, outdoor adventures, and high-altitude locations. Suitable for athletes, active individuals, older adults, and travelers, they can also help support post-workout recovery and reduce the effects of fatigue from long trips. Increase energy and feel better on the go with the 2 and 3-pack of 5 and 10-Liter Natural Flavored Oxygen Bottles from Boost Oxygen.