The "Rustic" Ring Stacker is part of our Down-to-Earth Collection and provides a playful, multifunctional way to develop fine motor skills. Made with BPA-free silicone, this unique toy features vibrant colors and different sizes that can be stacked together onto the base or without; allowing your little one's cognitive reasoning abilities to take off as they sort by color and size! This multi purpose sensory delight has teething, water play & hand coordination uses in addition to being an ideal tool for Montessori learning techniques - stimulating problem solving capabilities while letting creativity soar. Details: Included: Set of 8 stacking rings, a base and a ball on top Dimensions: 8.5 x 3.25 x 3.25” 100% Food grade, BPA-free silicone. Recommended for ages 6+ months - 10 years old Stacking toys are designed to improve fine motor skills, and cognitive reasoning abilities, which benefit in brain development.