I find the backpack chic and comfortable to wear. A 15 inch notebook fits in well, but needs to be easily inserted at an angle. Old and klobie notebooks over 3.5 kilos fighting weight will probably not fit. I myself have a 15 "Retina MacBook Pro and it fits Herrvorragend pure, even with Laptop Case. A 17" notebook will probably not fit, unless it is extremely thin.