Little Tikes Wooden Critters toys are all-natural, sustainably-sourced, wooden infant-toddler toys infused with bright, colorful, fantastical designs. Each tree used in the creation of Wooden Critters toys is replaced with a seedling, helping create a brighter, greener future for our children. The Wooden Critters Unicorn Shape Stacker includes a stationary stacking tower and eight stacking rings. Stacking toys like the Unicorn Shape Stacker help develop sorting, stacking, grasping, and hand-eye coordination.