Teddy Bear Bunk Mattress 74" x 38" x 3" - Affordable RVing
Balus Folding Bed with Mattress,Portable Foldable Roll Away Adult Bed for Guest,Fold up Bed with Memory Foam Mattress, Firm Bed Frame with Baffle, Metal Frame on Wheels-Grey - Walmart.com
Mattress Size Chart - Mattress standard, specialty and custom sizes