My eldest daughter is in her secondary grade 1, so she needs a school bag and she requested a backpack. And so www.sewsweetness.com have this pattern plus video offered on sale the time I bought it together with three more pattern and video as well. That backpack is a cumberland backpack. I used the fabric I bought at stoffenspektakle which is an upholstery fabric in a cubic form of shape. I combine it with a cork fabric on the pocket which I bought at Les Tissus du Chien Vert Liege. As for the lining I bought that long time ago at www.cotonurbain.be. Zippers, twist lock, nylon strapping and bias tape are bought at veritas. I do not have mesh so I just use fabric instead.