This is an oxygen mask meant to make it easier to receive oxygen from an oxygen tank. The mask's connector piece, located just below the nose, only works with oxygen tubing. This transparent mask is made of soft, flexible plastic to provide you with a comfortable fit. An extra wide, adjustable elastic strap is also included with this mask to help you find the best fit possible. This mask includes 7' of oxygen tubing, and comes in sizes fitting either an adult or child.