Designed with user in mind. Portable oxygen concentrators are easy to travel with and are now light weight compared to a traditional home unit. Portable Oxygen concentrator are used to provide oxygen to users who have low oxygen levels. Portable units are equip with a re-chargeable battery. Paying close attention to charging portable battery before use will maximize time of use when traveling. One of our leading manufacturer Philips Respironics has designed, The SimplyGo Mini Oxygen Concentrator weighing 5lbs - 6lbs. Most Portable Oxygen Concentrators (POCs) are FAA approved, think of all the travel possibilities!