BRIGHT AND TACTILE FOR MULTI-SENSORY LEARNING -- These lightweight stacking stones have a warm, rubbery feel. Children love their 6 bright colors and odd shapes! SUITABLE FOR 18m+ -- Safety tested for children aged 18m+, these pebbles come in 3 large sizes which are perfect for small hands to grasp. GREAT VALUE -- 8 large, double-sided activity cards accompany the pebbles to help kids learn about shapes and colors. LEARN EARLY MATH SKILLS -- Use these sorting pebbles to teach your toddler/child how to recognize and organize by shape, color and number. CONVENIENT STORAGE -- The Junior Rainbow Pebbles Activity Set comes in a sturdy plastic case, making it an ideal manipulative to use in child care centers, schools and at home.