4.5 x 8.5 inch disposable sheets. Dyes caught by the sheet. Can't get on your clothes. Dyes and grunge run into the water in every wash load. Woolite Dye Magnet helps trap dyes and grunge in the wash. When they're trapped by the sheet, they can't get on your clothes. The sheets change color as they trap dyes & grunge. You can see it! Woolite Dye Magnet sheets are safe for washable fabrics. They're made from a strong material that can go in the dryer. Sort the laundry like you normally would. Remember to follow manufacturer's garment care labels every time you wash.