I purchased a Resmed Air Mini for travel. I purchased it for future travel. I wanted to be sure I got in time for a June trip. It has a 15 night RISK FREE return policy. I didn't use it for about 4 months but used it on my trip for only 10 consecutive nights. I did not like the air pressure even though it's set as the Resmed Airsense 10, my main machine. This company does not honor that risk free policy stated on the product page. I have purchased much from this company, never again.