
The teardrop had an 8" mattress from Walmart and the Scotty had 5" high density that I ordered through an ebay seller.
I've ordered a 6" mattress for the cargo trailer. Should work great as a bed and as dinette seating cushions! Again from Walmart. On sale and free shipping to your home.
Just need my trusty $10 electric knife when the mattress arrives to cut the lower seat cushions and the back cushions. Once laid out it will equal a queen size of 60" x 80".