Step 1: To reinsert the mattress cushion into the outer mattress cover, first note that the “TOP” label on the mattress cushion indicates the top of the mattress, which should be facing up due to the memory foam layer.
Step 2: Insert the mattress cushion into the zippered opening of the outer mattress cover and fully zip it up.
Step 3: Smooth out any wrinkles and make sure the cover fits evenly and nicely around the mattress cushion.