UNIVERSAL TUBE - These tubes can be used for standard and high-flow oxygen therapy and come with standard connectors which are compatible with all major oxygen therapy brands. PREMIUM QUALITY MATERIALS - Manufactured from latex-free quality materials which resist cracking and tearing. When uncoiled, tubing lies out straight, minimizing "torque" or pull on the cannula. THREE CHANNEL TUBE DESIGN - Our Mars Wellness three-channel inner lumen design providing an uninterrupted flow of oxygen that provides maximum safety for the patient. CRUSH AND KINK RESISTANT - The crush and memory-resistant tubing are great for use while sleeping because you don't have to worry about restricting your oxygen flow when laying on the tubing. BOLD GREEN TUBING - This tubing features a bold, green color which is known to lessen the possibility of accidental falls associated with tripping or getting tangled with your oxygen tubing.