This Wooden Animals Memory discs set comes in a cotton pouch for easy storage. Set includes 18 pieces in total which consist of 9 pairs of matching animals. At 18 months the child can use these wooden discs to learn animal names and sounds, as they grow older they can start matching the animals. Older kids can play it as a classic memory game by placing the animals facing down and trying to find the matching discs. This toy is sure to grow with your child. These kind of memory games help in children's attention, concentration, focus, memory retention, hand and eye coordination and fine motor skills as they grasp and release the discs during play. Details : It is printed on 4mm Birch Plywood with 6cm Diameter. Do not put our toys in water . Wipe with damp cloth to clean wooden toys.