Bed Scarf or Bed Throw
A traditional bed scarf or throw usually stretches across the bed’s width and covers about one-third of its length. For a full-size mattress that measures 75 inches long, one-third would be 25 inches. The width of the scarf is based on where you’d like the edges to fall. Since a full-size mattress is typically 54 inches wide, you’ll need 54 inches plus twice the side drop. If you’re calculating yardage to make one, be sure to add extra inches for hems and seams.