A perfect bag for professional use, waterproof and strong. I used it as a main bag "customer" for 3 weeks of canvassing in Guyana and the Caribbean, with my catalogs, laptop and all accessories (business cards, USB keys, samples, paper, portfolio, insecticide, sunscreen, water, hat etc.) It is impervious to tropical rains, and that is saying something, survives heavy loads (10 - 15 kg tossed in appointment of appointment), easily washable (put in the mud sometimes). Very comfortable on the back, you do not feel or bar reinforcements. The stick mode wheels are of good quality, although it has a little game. By cons, do not expect to add a significant toiletry bag for a small displacement for example. Even the central pocket is slightly wider (a small bottle of water is the extreme limit in width), or you must force the zippers. Therefore advisor to the point with a blouse and under change of clothes, or the long journey with another bag for personal belongings. The bag roulette passage say is super convenient and fast. If the wheels are clean you can even keep the straps and rollers together (but beware of low back tasks.