Now you can create fun dinosaur footprints with every step you take! Simply fill the two Stomper containers with powdered chalk, strap them onto your hands or feet, and start stomping! Chalk Stompers transform driveways or patios with colorful prehistoric footprints that wash off easily with water. Set includes two adjustable foot stompers and four colored powdered chalk packs. Washable, non-toxic powdered chalk. Colors and styles may vary. Read all warnings and directions in the enclosed instruction manual before use.