PRODUCT FEATURES: Up to 154" screen Large front pocket for accessories Large central compartment for your personal belongings, documents and accessories Conversion system backpack-to-trolley or trolley-to-backpack, the foam flap protecting your back from the wheels Heavy duty telescopic handle made of high quality aluminum Compacting strap to optimize the size of the backpack Two PVC wheels of 6 cm diameter with high end silence ball bearing Product Description PORT Manhattan Backpack Trolley - notebook carrying backpack Product Type Notebook carrying backpack Product Material Ballistic nylon Dimensions (WxDxH) 35 cm x 23 cm x 47 cm