Features:&nbsp; 【Comfortable carrying】S-type decompression shoulder strap adopts thickened honeycomb sponge to promote air circulation, which is conducive to heat dissipation and evenly disperses the pressure on shoulders.Adjustable shoulder straps with a top handle for comfortable carrying options. 【Large storage space】Large storage space, reasonable storage, clear partition of items to improve learning efficiency, books, tablet computers, clothes, notepads, mobile phones, water cups and so on.For school, camping, college; the organization pocket and mesh side pockets let you store various accessories; with lock ensures safe storage of your belongings. 【Double pull head design】Double pull head design using smooth zipper, pull smooth not easy card, with double pull head design, convenient and durable! This backpack has luminous effect at night. Cool design for stand out from other usual. 【High density waterproof fabric】High density waterproof fabric, don&#039;t worry about wet books in rainy days, durable and wear-resistant, feel fine.Play jujube reinforcement processing shoulder strap connection, play jujube reinforcement processing, back again heavy things are not afraid, durable not easy to break! 【Adjust buckle design 】Adjust buckle design according to the need to adjust the length of the shoulder strap, anytime, anywhere, bear more comfortable!The backpack can be luminous when it absorbs the sunshine. Specifications:&nbsp; Material:Oxford cloth Color:Black(type A,B);light grey(type C,D) Size(about):29x17x48cm/11.4x6.7x18.9inch(LxWxH) Type A:USB big music guy; B:Big music kid + pen bag + burglar lock;C:USB large light Grey music boy;D:USB large light gray music kid + pen bag + burglar lock Package Included:&nbsp; 1pc x Luminous Backpack Note:&nbsp; 1. Due to the light and screen difference, the item&#039;s color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement. <div style="white-space:nowrap;"> </div>