Bed protector & sheets rounded corner

Foam mattress toppers, at least the usual memory foam egg crate sorts, can be cut very easily with an electric knife or a serrated bread knife. I had to shorten a queen one for my RV, and it probably took longer to unroll and spread out the mattress topper than it did to cut six inches off the end. It definitely took a lot longer for the chemical smell to dissipate...but now the bed is transformed into one that's actually quite comfy.