The First Years Stack & Count Stacking Stackable Cups Water Toys 8 Piece Set C1 The First Years Stack & Count Cups 8 Piece Set. Colorful Baby Toys: This set of stacking toys features 8 brightly colored cups that stack together with unique holes in the bottom for pouring and water play at bath time. Montessori Stacking Toys: Your kids will love creating a rainbow in the water by fitting the cups together, stacking them up, or turning them over and hiding treasures underneath. Baby Development Toys: Each of these stacking cups doubles as baby learning toys by featuring features large numbers on the bottom to help toddlers practice counting. Bath Baby Sensory Toys: Each of the cups in this set of colorful stacking toys are easy to clean and made without BPA for toddlers and kids ages 9 months and up. Excellent, like-new condition.