IMOOY 3 Inch Cooling Gel Memory Foam Mattress Topper - California King Size for Back Pain Relief & Pressure Relief, Breathable Removable Washable Cover, 10 Year Warranty - Perfect for Hot Sleepers, Side Sleepers & Back Pain Sufferers

The only minus is it slides on the mattress. Very comfortable and a great value.We bought for our RV as the mattress it came with was very hard. It certainly improved our sleep and made for more comfortable rest. Much cheaper then buying a new mattress so a win with me.Daughter has on dorm bed & said it is on the softer side & prefers her feather topper at home.This topper is awesome. It’s soft and comfortable. Helped relieve my back pain. Definitely worth it.This mattress top is super comfortable. The seller was very helpful in rectifying a disastrous Amazon delivery. THANK YOUAt first it felt great, but middle of the night felt like I was sinking in it. I had a recent back surgery and it was hard for me to roll over on it.I bought this to make an already-thin mattress feel thicker (so as not to feel the hard base beneath) but it didn’t work. It is 3” thick when not being sat on / lain down on but it instantly becomes 1mm thick and I can feel the board anyway.A waste of money in my case, although it may feel cool and nice for someone with a thick mattress.My mattress is too firm for me and I had been waking up in pain because of it. I have tried a few other toppers, but they were too firm. I've been researching memory foam, as it has changed a lot over the past 10 years.The thing we need to keep in mind is that everyone's body is different. What some people called soft, I called firm.This topper has a zippered Bamboo cover, which helps keep me cooler at night. They say to let it expand 48 hours before using. It was over 3" in 12 hours but I decided to wait just to be sure I didn't damage it.I doubt now it would have but better to be safe than sorry.Best of all, this seller stands behind their products! I am so impressed by the way they reached out to me when another topper did not work out for me and encouraged me to try this one. A seller who really cares about their customers. I am deeply grateful!