Cars Backpack

1). Material: Good quality thick canvas, durable2). 3 sizes for option, F5, F6 and F7, hand measuring size, 1-2 size difference is normalSize F5: 31 X 23 X 10 cm (12.2 x 9 x 3.9 inch), suitable for 2-3 years old kids, height about 100cmSize F6: 33 x 25 x 10 cm (13 x 9.84 x 3.9 inch), suitable for 4-6 years old kids, height 100cm to 125cmSize F7: 38 x 28 x 11 cm (15 x 11 x 4.3 inch), suitable for 6-8 year old kids, height above 125cm3). Structure and details:- all the three sizes include main pocket and one front pocket- the four side wheels are zippered small pockets for some small stuff- the zipper head is in car wheel shape too