Solar Bells are based on the time-tested glass cloche, but they're made of clear plastic instead of glass. That means they're portable, stackable, and much more affordable. And they're sturdy enough to protect against wind and pests as well as cold. Vented tops prevent overheating. Anchor your Solar Bells down with our Earth Staples (sold separately). Set of 3 Each measures 10" H x 13" diameter