Frost Bag, Tree Bag, Protect Shrub, Fruit Tree and Young Plants, 1.2oz/sq.yd Thick, 38" X 38" The bag is made of row cover 1.2oz/sq.yd thick, heavy duty protect trees, flowers outdoor or indoor from the low temperature easy to use, it is a bag with string, just cover on plants, and then strain the string 38"x 38"