Introducing the Smile Print 6 Month To 6 Year Summer Time Baby & Kids Super Comfy T-shirt Set. Made with super soft and breathable fabric, this set is perfect for keeping your little ones cool and comfortable during the hot summer months. With sizes ranging from 6 months to 6 years, this set is designed to grow with your child. Add a fun touch to their wardrobe with the adorable smile print on each shirt.