Whether you're an athlete, a traveler, or just feeling like your O content is a little low, this bundle of Boost Oxygen Natural 5 Liter Pure Canned Oxygen Canister with 3 Liter Pocket-Sized will help you feel refreshed. This bundle comes with (4) 5-liter canned oxygen and (1) 3-liter canned oxygen. This personal-size bottle of oxygen will soon be your right-hand man. Sitting at 5 liters in size, you're about to have over (100) 1-second inhalations of oxygen at your fingertips and your lips. This unflavored, odorless, 95-percent pure Aviator's Natural Breathing oxygen is safe to use. The compact 3-liter size makes this canister great for use on the go and for day trips to areas with a high altitude. This breathing oxygen is all-natural and is ideal for athletes, older folks, or even to help combat jet lag. Supplemental oxygen can even help in workout recovery, as a natural way to get you back to feeling your best. Feel better on the go with this Boost Oxygen Natural 5 Liter Pure Canned Oxygen Canister with 3 Liter Pocket Sized.