Essential for frost-sensitive vegetables, berries and container plants, this lightweight material provides up to 2-4 degree F of frost protection to extend your growing season. This floating row cover establishes a stable microclimate by capturing extra heat during the day and then slowing the loss of heat at night from the soil. The fabric "floats" directly over the crops without suffocating, crushing or breaking delicate plants. It's porous to air, water and nutrients, transmits 85% of light and is UV stable to protect your crops even more. 6' wide x 50' long.