Grow longer with DeWitt’s 1.5 ounce N-Sulate Frost Blanket . It is a medium weight, permeable, UV-treated fabric designed to protect flowering annuals, bedding plants and vegetables from the severe cold and freezing temperatures. This fabric installs easily and is reusable. N-Sulate can lengthen your harvest time and extend your flowering season. Reusable. UV treated for long life. 12 foot wide. Sold in 10' continuous increments or 12' x 10' package. Great to have on hand for those early or late frost. Our favorite season extender! Pick your length in the drop down menu.