My mattress topper came with a 17"-deep fabric "sheet"/cover. Did you put one of your flat sheets on the topper and then put the fabric cover over it?
No, I put the topper inside the cover it came with. After placing the topper on the mattress, I put a fitted mattress protector over that, then made the bed as I normally do (fitted sheet followed by the flat).
Updated on April 15, 2018
By Shauna L Bowling