Signature Backpack Cat. Similar to our Quilted Backpack but larger, so If you need to pack a change of clothes or your child likes to take all their favorite toys with them to preschool, make sure they can fit it all in with an adorable Stephen Joseph Signature Backpack. Kids love the fun and friendly characters, and theyâre even great for moms because theyâre easy to care for and can also double as a diaper or change bag. Each style uses mixed fabric, beads and buttons to create a fantastic design.