I had a difficult time putting on this mattress cover. Even with two people, it was hard to figure out what side goes where and to enclose the mattress. It also runs large. When I eventually figured it out, I was satisfied how the product felt. I have a dust mite allergy and have noticed a significant decrease in symptoms since using this cover.  So it did work for me. I also like how I can machine wash it. It was very hard to put on but I still recommend it for those with indoor allergies.