Lamaze Rainbow Stacking RingsEasy to grasp rings make stacking easy and fun Four multi textured crinkly rings that awaken baby's auditory awareness and invite baby to explore stimulating tactile senses Perfect for helping baby develop dexterity and hand eye coordination Bright, bold colors and patterns invite baby to focus, stimulating vision. Problem solving skills are fostered as baby figures out how to stack rings on the post Gripping and stacking the soft rings strengthens