Your child will have a blast building and knocking down their pretend scenes with the Jr. Hollow Wooden Building Blocks. Durable and sturdy, the blocks will withstand years of rugged play. If your child has a flare for construction and creativity these Jr. Hollow Blocks are just the stimulation (s)he needs. This 16-piece set constructed using Baltic Birch and northern hardwoods is very durable and features rounded edges and smooth sanded surfaces on each of it's pieces for your child's safety and hours of creative play. The blocks are sealed and finished inside and out for a uniform look.