Thomas and Friends Backpack and Lunch Bag Set Thomas and Friends Backpack and Lunch Bag Set for Toddlers and Kids. Thomas the Train mini backpack (11") with zip closure, shoulder straps and top loop for hanging (11x9x4"). The perfect size for preschoolers and toddlers. Includes insulated Thomas the Train lunch box (8x9x3"). Perfect for carrying snacks and Thomas trains. This set also includes Thomas the Train water bottle and over 100 Thomas stickers. Officially licensed Thomas the Train school supplies.