BetterThanAir started the Supplemental Oxygen business and industry in 2002. Now this new industry is thriving. It is proven medically that supplemental oxygen will prevent or help alleviate the symptoms of altitude sickness. BetterThanAir's Supplemental Oxygen products are all non-prescription products and have helped people coming to Colorado and other high altitude ski resorts for 7 years! Don't let altitude sickness ruin your ski vacation.