Lightning T-Rex Dinosaur School Backpack for Boys, Girls, Kids Decorative Flaps On The Backpack Are Interchangeable! Backpack Has A Spacious Main Storage Compartment With A Large Padded Interior Pocket For A Small Laptop Or Large Tablet. Lots Of Pockets. Thick Padded Back For Comfort With Adjustable Shoulder Straps. Optional Lunch Box Attaches To The Outside Of The Backpack With Durable Metal Clips And Comes With An Adjustable Tote Strap. Backpack: 17" x 12" x 7"