Reemay Garden Blanket - 67" x 100&#39; Floating row cover made from spun-bonded polyester - Will not rot, shrink, or sag Holds in warmth to provide early and increased yields Great for pest control and to extend your harvest time, no wire supports necessary Breathable material allows light and water, won't overheat plants like plastics can Measures 67 inches x 100 feet (6 oz. per square yard, 85% light transmission)