I didn't expect to like this. I can sleep well pretty much anywhere if I have my familiar pillow, but this looks nothing like my familiar pillow. I've tried the stuff sack filled with clothing. I've tried the air pillows. I've tried nothing at all. Then I tried the Fillo and fell in love. It fills with air, but on top is a layer of memory foam that makes all the difference. The air pad type air intake allows you to precisely control how much loft you want. I tend to roll up my coat underneath to get it higher, then let out some air to make it softer. It's comfortable even on my side. Rolling up into itself makes it the perfect pillow for me.