The Fresnel Premium 8" plush memory foam mattress is very comfortable. I purchased it to go with with Barium Twin Daybed (they both arrived on the same day - very convenient). After putting the daybed together, I opened up the mattress (it's tightly packed in plastic - don't use scissors to open it or you might cut the mattress). There's a seam in the plastic packaging that's easily opened without much effort. As soon as I opened the plastic the bed started to inflate (it's flat as a pancake when you get it - I put it on the daybed while it was still flat). Took about 10 minutes to fully inflate. Truly amazing. It seems comfortable. I did put a foam mattress pad over it for added comfort.  Fits the daybed from end to end. It's a perfect fit for a daybed.