Review on Xtra-Comfort Leg Elevation Wedge Pillow - Elevating Support Cushion for Sleeping, Swelling - Prop Up Position, Back Pain Relief, Foot Rest, Sciatica - Knee Elevating Incline Memory Foam (Brown) by Kyle Beaner

Only used two nights so far. At first I thought it was a bit narrower than I expected and thought it might be difficult to keep my feet straight on it and that it doesn't stretch as far/height as I thought. The first night I put a pillow on it and it worked great! But it seems he's reached the goal of no longer collecting pillows under his knees. But the second night it seemed to expand more during the day after the first night. Didn't have to use a pillow. Both nights I actually lay on my back with my legs up. I'm not even sure if I changed anything other than the position of my head and I woke up without the usual lower back pain I usually have! I have a pretty confounding lumbar spine and my neurosurgeon recommended one of these for me, among a few other things - to maintain a tolerable level of pain and avoid surgery for a while. I'll update in a few months if it sags or something but for now I'm very happy with it and glad I bought it!