Sleep study said I needed a CPAP machine pronto. After having been a volunteer fireman for many years, wearing a mask doesn't bug me but I wonder what folks do when they travel. How do you drag something that big on an airplane or on your trike? Guess you leave all those clean socks and underwear home? What size do these things come in... the one in the sleep study place was bigger than a shoebox. If you don't use one and have no first hand knowledge... well God bless you for your good health and decision not to give advice which isn't 1st hand hehe