Designed to fit over standard tomato cages, they are roomy enough for the most aggressive growers. Constructed as 1 long sleeve, simply cut to the length you want, twist-tie the top (twist ties are included), and slip over the plant. The red, perforated plastic allows air circulation while protecting the plants from cold, rain, pests, and also hastens the ripening of fruit. The color may fade, but the storable sleeves offer seasons of use. Enough for 6-7 plants: 28 inches by 20 feet.