Build a beautiful circular stone raised garden bed in minutes! The durable, UV-resistant polyethylene looks like stone and is strong enough to sit on. Steel spikes secure the system and anchor it to the ground. Wall sections are stacked to obtain 20" wall height. Eight sections create the 4-foot diameter circle shown. Interior diameter is 3 feet. Each curved section is 10" high x 6" deep. Kit includes eight curved sections and four 28" spikes. Combine straight and curved sections for unlimited layouts! Please allow 1-2 weeks for delivery.