The Curious Tots Play Boxes series offers a box tailored to each stage of a child's development, from 12 to 36 months, with one box every 6 months and 4 high-quality wooden toys in each, designed so children can mix and match pieces across the different sets. Box 4 contains: a Mystery Bag, Storytelling Cards, a Peg Board Ladder that turns stacking into a learning adventure building motor skills, early math, and vocabulary, and a Weight Scale. Size: 28.5 x 23.5 x 13 cm. Ages 2+.