78" x 20' DT-550 PVA Agricultural Floating Row Cover 2m (78") x 6.1m (20'), will shrink approximately 5% crosswise and 6% lengthwise over time Breathable (45% porosity) and allows plenty of light through (91% light transmittance) No need to remove the cover for watering; you can water right through it Double-thick material is reinforced with nylon threads to prevent tears Highly resistant to ultraviolet degradation and has high heat resistance