I did not have much hope that this would work for me after 3 years of trying pillows, but I am so happy I bought it. After the first night my leg swelling was almost gone. "Deep vein" test results showed that the swelling is inoperable. The vein specialist approved an order for a $5000 huge contraption of several large stiff heavy pieces attached together by Velcro and controlled electrically by a 4 knobs on a large heavy panel to pump air through rubber tubing into the body coverings (toes to above waistline) to provide compression from toes to legs and ending just above the waist. The salesman's demonstration in the doctor's office for a few minutes gave immediate relief (maximum is 1 hour). The huge package arrived at my door with a guy who immediately said he was running 30 minutes late. He strapped me in while I lay atop my bed, then left after half an hour while I was cocooned like a caterpillar in its pupal stage waiting to turn into a butterfly. I realized after he left that I had no way to free myself because I could not reach the closest fastener. I became terrified. After calming myself, I managed to bend enough to reach the first fastener, then another, being careful to not accidentally fall off my bed, until I finally freed myself. I live alone, no way to reach my phone, and just turned 90 years old. Thank goodness I saw this item pictured on the WalMart website. It seemed too good to be true. My sneakers now feel loose. From $5000 to less than $50 is remarkable for the same result. The designers kept it simple and affordable, and must have tested it thoroughly because it is comfortable, sturdy, simple, adjustable, portable, with a soft smooth WASHABLE cover, and does not separate nor move when I am asleep. I bought the 3-layer model just in case I needed it, but need only 2. I am grateful that I happened to see this.