Outer Material: Polyester; Size: Width 7.9 inches (20 cm), Height 9.8 inches (25 cm), Thickness 3.9 inches (10 cm).　Weight: 14.1 oz (410 g); Country of Origin: China; Its durable and lightweight for children with small bodies. Weighing only 14.2 oz (410 g), it is lightweight, and it is made of fluffy fabric, so it can be used to store items such as toys, daily necessities, and snacks.Ergonomically designed: The shoulder belt has been treated with mesh processing, which greatly reduces sweat buildup. The back part is smooth and breathable, making it comfortable to wear even when wearing it. It has an adjuster that can be changed in length and adopts a large zipper for easy opening and closing.