Boost Oxygen is available in Large (10 Liter), Medium (5 Liter), and our NEW Pocket Size (3 Liter) canisters, and you can select from the following aromas: Natural, Peppermint, Pink Grapefruit, Menthol-Eucalyptus and the new THINK TANK™. We have thousands of retailers nationwide - check the U.S. Retailers page for one near you, or Shop Online ...