Polyester lining Zipper closure Dimension: This 3 in 1 girls backpack set including: 1* girls Book bag: 30*17*45cm, 1*insulated Lunch tote bag:26*15*10cm and 1*little pencil bag: 21*7cm. Water-Resistant & Comfortable Material: The cute backpack is made of high quality waterproof polyester which is tear-resistant, scratch-resistant and durable performance, capable of protecting your kid's belongings against rain drops in rainy days and the school bag with delicate sewing thread, provide added durability. The most comfortable kids backpack, ergonomic design and padded shoulder strap, adjustable mesh padded shoulder straps and soft mesh back panel give more breathable, ventilation, heat dissipation that support carrying the backpack.