Personalized Whatif I Love to Swim with Whatif Monster Youth Hoodie Sweatshirt. Take a dip with the Whatif Monster! Whatif I Love to Swim with Whatif Monster Youth Hoodie Sweatshirt - Black, from the hit children's book, "Jonathan James and the Whatif Monster" by Michelle Nelson-Schmidt. This youth pullover fleece hoodie delivers reliable all-season comfort with a durable cotton-poly blend that keeps kids warm and ready for anything. Crafted in 7.5 oz, 60% cotton / 40% polyester fleece, it features a jersey-lined double-needle hem hood, topstitched neck, and coverstitched shoulders and armholes for added structure. With ribbed cuffs and bottom band, a front pouch pocket, and side-seam construction, this hoodie is built for everyday wear, vibrant school days, weekend outings, or layered looks. Machine washable and made to stand up to repeated wear and washes.