Personalized What If It's the Best Summer Yet? T-Shirt. Make every summer the "best summer" with What If It's the Best Summer Yet? T-Shirt - Columbia Blue, featuring Jonathan James from "Jonathan James and the Whatif Monster" by Michelle Nelson-Schmidt. Everyone loves our Custom T-Shirts! Wardrobe essential for looking good, 24/7. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar. Shoulder-to-shoulder taping. Double-needle stitched sleeves, bottom hem and front neck. Note: greys are a cotton/polyester blend.