Shape-sorting cube with 6 rubbery shapes tethered to its corners Encourages fine motor skills, sensory learning, tactile exploration, visual-spatial skills An innovative approach to classic shape-sorting fun Shapes are rubbery, textured, squishy - Made of 100% food-grade, BPA-free silicone - Great for teething! Shapes each slide smoothly and snugly into their respective slots Shapes are tethered to each corner with extra thick, strong, and secure string - Never lose a single shape! Strings are short enough to be exceptionally safe, long enough for little hands to grab and explore freely Shapes include triangle, square, oval, circle, pentagon, double circle High quality design and materials, built for lasting durability and safety