I love the size, because it’s spot on (I ordered the King). The foam is pliable and soft, but when it’s on your mattress, it creates a firm, but very comfortable cushion under your body without putting any pressure on your joints. It forms to your body shape as you change sleeping positions during the night. Ahh! I can finally sleep the entire night, I’m not waking up in the middle of the night with severe back pain, but I am waking up refreshed and energetic every morning from a full sleep cycle. Yay!! It’s by far the best purchase to date!! Thank you.