3 in 1 Convertible Travel Backpack

STORAGE SPACE & POCKETS: One separate laptop compartment hold 17.3 Inch Laptop as well as 15 Inch,14 Inch and 13 Inch Macbook/Laptop.One spacious packing compartment roomy for iPad,mouse,charger,binders,clothes,ect. Pockets at side for water bottle and compact umbrellamake your items organized and easier to find. COMFY & STURDY: Comfortable airflow back design with thick EVA but soft multi-panel ventilated padding, gives you maximum back support. Breathable and adjustable shoulder straps relieve the stress of shoulder. Foam padded top handle for a long time carry on. FUNCTIONAL & SAFE: A luggage strap allows backpack fit on luggage/suitcase, slide over the luggage upright handle tube for easier carrying. Making your journey and travelling more convenient wherever you go. SHAPE CHANGE: The backpack can expand the space by adjusting the top. Suitable for traveling and hiking. DURABLE MATERIAL & SOLID: Made of Water Resistant and Durable Polyester