Weighing in at 10 pounds, the Zen-O portable oxygen concentrator is one of the lightest units in its class. While some people might find it light enough to carry, the Zen-O Travel Cart makes transporting your concentrator as easy as possible. The custom travel cart was designed specifically for use with the Zen-O portable oxygen concentrator. It has large wheels which makes going up curbs, dealing with puddles, and going up stairs a breeze. And you never have to worry about your concentrator falling off the travel cart, as the travel cart has a deep cutout platform in the shape of the Zen-O and the custom carrying case has a strap that slides over your travel cart to guarantee it stays in place. Even though the Zen-O is one of the lightest continuous flow portable oxygen concentrators on the market, carrying a 10 pound concentrator everywhere you go can get tiresome and uses up a lot of energy. The travel cart is equipped with a locking telescopic handle that you can adjust to the perfect height, and the oversized wheels make using the travel cart almost effortless on different terrains and in almost any weather condition.