SpongeBob Backpack Set - SpongeBob Backpack for Boys Bundle with 16” SpongeBob Backpack with Front Pocket, 26oz Water Bottle, More | SpongeBob SquarePants School Supplies. This SpongeBob school backpack features adjustable shoulder straps, a zip closure compartment, 3D molded front pocket, and a top loop for hanging featuring the colorful artwork of SpongeBob. The SpongeBob backpack measures approximately 16" x 12" x 5". This SpongeBob backpack for kids has plenty of space for SpongeBob folders, notebooks, and books. The front accessory pocket is perfect for holding SpongeBob pencils, pens, school supplies, toys, snacks, and more! This durable SpongeBob backpack for girls also comes with a bonus blue 26oz Beach Kids water bottle and Beach Kids stickers! Officially licensed SpongeBob backpack school set for kids. Pair this with any other SpongeBob school supplies you have!