Aoking Waterproof Trolley Backpack With Wheels SLN67056

★ Multi-functional using: It can not only be used as the trolley luggage bag but also a daily backpack.When you want to use as a backpack,you just need to hide the handle into the top pocket and take out the shoulder straps,fasten the adjustable buckle. ★ Waterproof function: With strong Water resistant fabric even waterproof zipper,this backpack guards your electronics and papers in all directions with getting wet.And if raining on your backpack,just wipe it immediately. ★ Unique and durable design: The stainless steel pull rod is made of anti-rust aluminum with scratch resistance and longer life.There is a earphone label design.You can listen to music anytime you want while you could enjoy your trip fully and you just need to pull out the headphone cable from the backpack. Specifications Model: SLN67056 Dimensions: (1) S: 13.39" x 7.87" x 18.50" ( 34 x 20 x 47 CM) (2) L: 15.35" x 9.45" x 22.84" ( 39 x 24 x 58 CM) Capacity: Around 35 L / 54 L Weight: 2.5 KG / 2.87 KG (5.51 lb/ 6.33 lb