First off a comforter is not the same thing as a bedspread.

Twin bedspread size (standard 21" drop) = 81' x 106"

Twin Quilt Size = 63" x 87"

Twin Comforter Size = 69" x 90"

If you will bookmark this site http://www.unitednotions.com/un_main...uides!OpenPage you will always have the measurements on hand.

Your bedspread size really should be measured on the bed you plan to use it on so you get the correct drop. The above are standard measurements and don't know how high your mattress might be.