This mask was perscribed by my husband's doctor in place of his previous mask to help with excessive leakage during the night. My husband still has a bit of leakage but we are still find tuning the mask. What was so great about the Evora mask is the link is the link to the video on how to fit,tweak and clean the mask. It was such an aha moment for both of us. My husband has had a CPAP machine since 2014 but we had no idea how to clean the mask (that there were 2 parts to the mask that need to be cleaned) the schedule for cleaning, fitting of the mask or tweaking the fitting. My husband feels more confident about using the mask as well as way more comfortable thanks to the video . And thanks to Andrew for making the process of ordering the mask so efficient and easy. We recieved the mask in a timely manner as there was some urgency to getting a replacement mask. Even though we had to pay out of pocket because we were out of network it was worth it.