Personalized Summer Is Full Of Fun Adventures Together Toddler Sweatshirt. Summer is best spent having adventures with a friend! Summer is Full of Fun Adventures Together Toddler Sweatshirt - Heather, featuring characters from "Jonathan James and the Whatif Monster" by Michelle Nelson-Schmidt. Keep your little one cozy and stylish with this soft and durable toddler sweatshirt. Designed for comfort and ease of movement, it features a classic fit with ribbed cuffs and hem for added warmth. Perfect for everyday wear, playtime, or chilly outings, this sweatshirt is made to withstand the adventures of an active toddler