The Trolley Laptop Backpack is very spacious. It has a laptop pouch in the back main compartment that can take up to a 15.6" laptop. There is a lot of additional space in this main compartment. The front compartment is spacious. There is a front zipped pocket as well as 2 side pockets. The shoulder straps are padded for comfort as well as adjustable. When using as a trolley the shoulder straps are stored in the back padded area.