This set includes 11 stacking cups and 6 rubber bath toys, a total of 17 pieces. The stacking cups are great for dry land or in the water. They are marked with numbers and letters and have two waterholes to make filling and draining easy at the beach, pool, or in the tub. The cups are printed with bright colors and letters and help your child develop fine motor skills as they repeatedly stack and take down the cups. Children also build good organization skills and practical abilities.