planToys 22-piece wooden Domino Blocks can be stacked, sorted and arranged in any creative way a child thinks. Set them up and knock them down in a domino race too! Watch how they tumble down. Children develop fine motor skills, learn colors, and start seeing cause and effects. Each domino block measures .7 x 1.4 x .3 inches. Use with other construction block sets too. At PlanToys our mission is to provide children with sustainable, eco-friendly toys that encourage early learning, fire the imagination, and stimulate the senses. Our toy designers craft fun products which encourage all aspects of a child’s development including gross and fine motor skills, language skills, social development and interaction, and much more. All PlanToys products are made from rubber wood trees which no longer produce latex. The rubberwood used is free of chemicals and is kiln dried to assure it remains chemical free. Our toys are assembled using a certified E-Zero formaldehyde free glue. Organic pigments and water-based dyes are then used to add color. A PlanToys toy is safe for your child, and assures a sustainable environment for their future. Suitable for children 3 years and older and adults too.