Add the appeal of a real flagstone pathway to your garden or yard without all the labor, heavy lifting and expense. Just position these sturdy polypropylene "stones" and gently push them into the ground. Easy installation Grid bottom "grips" the ground Resists chipping, cracking and fading Sold in sets of 4 flagstones Two shapes for a natural-looking, random effect Made of durable polypropylene 18-1/2" L x 16" W x 1-1/4" thick each