Nature Tomato fleeceThis new generation red growth membrane from Nature is specially for tomatoes and has 20 perforations (80 mm). The membrane is easy to roll out and is UV resistant. The red colour of the sheet reflects the light, yielding softer fruit and vegetables with increased sugar content. It also boosts yield. Growth membrane protects the soil from dehydration from the sun and wind and reduces evaporation of water, meaning you don't have to water as often.