The Best Grandpa in the World Sweatshirt is a Jerzees Brand 50% cotton/50% polyester set-in sleeve sweatshirt with ribbed collar, cuffs and waistband. The recipient's name or the children's names can be added for an extra charge. Specify name and stitching color for the personalization. Contact us for other Grandpa names. This design can also be embroidered on a denim shirt for an extra charge.