Lightning T-Rex Dinosaur School Lunchbox for Boys, Girls, Kids (Brown) Decorative Flaps On The Lunch Box Are Interchangeable! Net Pocket On The Inside For An Ice Pack. Lunch Box Comes With An Adjustable Tote Strap. Lunch Box Attaches To The Outside Of The Optional Backpack With Durable Metal Clips And Comes With An Adjustable Tote Strap. Lunch Box 8.5" x 10" x 3.5"