NEW Hello Kitty Large Backpack with Hello Kitty Lunch Bag Set Hello Kitty Large 16" Backpack. Product Dimensions: 16"(H) x 12"(W) x 5"(D) inch. Hello Kitty Lunch Box Bag. Insulated to help keep your food and snack protected. Product Dimensions: 9.5"(W) x 7.5"(H) x 3.5"(D) inch.