The Sunny rolling backpack includes a matching insulated lunch bag. The rolling backpack functions as both a bag on wheels for school and a fun carry-on backpack for kids age 3 years and up. The roller backpack has a main zippered compartment, 2 exterior zipper pockets and 2 side pockets, plus an internal organizer with key clip, pen slots and pouches for small items. This bag is small enough for kids in Pre-K to 3rd grade to pull—it measures 16 x 12 x 8 inches—yet fits lunch, books and a jacket. The adjustable aluminum luggage handle extends to 26 or 31 inches to be easily pulled by preschoolers and kids 36 to 52 inches tall. To convert into a wearable backpack, just pull-out backpack straps in seconds. When rolling, straps easily tuck away in slot on roller backpack—no having to unzip. Motion-activated LED light-up backpack wheels blink as they turn (No batteries required!) Wheeled backpack rolls and turn effortlessly on sidewalks and paths. This pre-K backpack features a metal frame and a molded bumper to protect against abrasion. Kids backpack and lunch box set is made of durable ripstop polyester fabric. The matching insulated lunch bag keeps food at the right temperature. Holds a sandwich, drink, snack, and ice pack. Measures 10 x 8 x 4 inches. At J World, we stand behind our products 100%. If you have any issues with this rolling backpack for girls and boys, we will make things right.