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The Costway Foldable Futon Mattress is a soft Japanese-style floor mattress, 190 cm long and 135 cm wide, with a sponge core, polyester fill and a removable, washable microfiber cover. It rolls up and secures with bandages and comes with a carry bag, so it works as a guest bed, dorm mattress or camping pad. The best new price is $63.99 at Best Buy as of November 7, 2026, the low end for a mattress this size among the 8 stores that carry it new.
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Lowest price we've seen: $63.99 on Nov 7 at Best Buy. Tracked across 9 stores since Nov 7.
Rated 4 out of 5 from 322 ratings, buyers mostly treat it as an affordable, comfortable floor mattress for guests and travel. Complaints center on thin padding and warmth.





