Kids SpongeBob Backpack and Lunchbox Set by Nickelodeon. Make your little one's school year a fun adventure under the sea with this vibrant SpongeBob SquarePants backpack and lunchbox set. Featuring 2 side mesh pockets perfect for water bottle storage. Never forget your lunch with the detachable lunchbox, perfect for quick and easy access and sure to make your carpool a breeze. Make the school year extra sponge-tastic with this backpack set. Walmart marketplace seller Belt Outlet specializes in sale-priced Backpacks and clothing accessories for men, women and children. We carry quality belts, wallets, headwear, cold weather accessories, childrens bags including Backpacks for Boys.