Dimple Stack, a toy with endless play possibilities. The top of each colorful cup features a soft silicone curve with a unique textured pattern. Little fingers love to touch, push, crush and squeeze them again and again. Children can participate in a great building and stacking game by placing the cups on top of each other or next to each other. An awesome sensory toy that arouses curiosity and provides fun playtime at the same time. Dimple Stack promotes fine motor skills, spatial awareness, sensory perception. The bottoms of the cups are made of high-quality nylon, the curves are made of 100% silicone, can come into contact with food. Be BPA free.