People are going to think I get a commission because I say "purple" every time the topic of mattresses comes up -
Mine is a brand called Purple; the Purple Mattress. I like it so much I ordered a Purple Pet Mattress, large dog size, for my little guy, Paxton. It's made of weird material, a cross between foam and gel, feels like a cloud and has a nice cushy cover on it. You can get a total refund after either a 30-day trial or 90-day trial, I forget which, plus you get a freebie. I strongly recommend the free sheets if they still offer them. The sheets are special made, and a necessity, imo. They sell the platform, too, for a reasonable price, but it'd be real easy to build one. Paxton's is just on the floor.
purple.com is their website. I don't know if they'd ship to where you're at, tho.