Comments:
These fleece covers are really nice for covering your plants when the temperatures dip below freezing. However, unless your plants are in somewhat of a protected spot, they won't keep them from freezing, if the temperature remains below freezing for an extended period, unfortunately. What is good about them is that sun, air, and rain get through the fabric, and the drawstring makes them very easy to put on, keep on, and take off. The fabric, because it is breathable is a bit fragile, and will tear, if not handled with some care. The large ones will go around a large container, but they are designed for a tall plant, so there is a lot of fabric leftover if you only bought the large for pot circumference. Overall, I would recommend them, but keep in mind they will not keep plants from prolonged freezing temperatures in an unprotected location. I would rate them a 4.5 for that reason, but that isn't an option.
Thank you for your feedback. Please note that the fleece covers are not designed to protect plants in freezing temperatures. Their purpose is really to try to protect plants from damage resulting from moderate frosts or wind.