3 years and up. Show young children what it's like to be on the road with this collection of jumbo Traffic Signs. Constructed from flexible, crack-resistant plastic material with UV inhibitors, these signs are durable enough for indoor and outdoor use. Teachers can fill the extra-wide bases with sand or water to prevent tipping and provide additional stability. Each sign has a 10" base and is approximately 29" tall. Store in a cool, dry place.