3 transportation options: back pack, trolley or carry handle. Total of 6 zipped compartments, including one for backpack straps which can be stored away securely. Padded laptop compartment with Velcro fastening, accommodating laptops up to 15.6" in size. Phone, card, key & pen holders. Telescopic trolley handle with two height settings and a comfortable rubber grip. 4 smooth-glide wheels for unlimited freedom movement. Padded, adjustable and breathable shoulder straps. Wrap around lumber protection. Fabric High Abrasion waterproof Cordura EN Standards RIS-3279 (Rail Standard) Fabric Only PULSAR PR545 Rail Spec Cordura Trolley Backpack