Attain early childhood emotional growth with this set of stones developed exclusively for young learners. The 8 jumbo-sized pebbles for small hands included in this set feature 4 different facial expressions - happy, sad, angry, and surprised. Each emotion is featured on 2 stones so children for sorting and matching activities. Made from a unique stone mix that is washable and durable, these can be used indoors and outdoors. These Yellow DoorⓇ Jumbo Emotion Stones are recommended for children ages 2 years and older.