This is the most user-friendly bag I have ever owned. Being a messenger style, it slips on and off very easily and is extremely lightweight, unlike my heavy leather bags. The main compartment is plenty big enough for my big (heavy) B-Mak wallet, and personal items, with room to spare. I love the see-through netted zipper compartment in the bag-I can actually see what is in there! I have yet to rummage through to find something, and that is highly unusual for unorganized me! The multiple outer pockets are so accessible, and I love the side pockets, which are expandable via zippers, making them even more versatile for not just water bottles. The quality is very good, zippers all work very smoothly, strap is very adjustable for any height/size of person (I'm only 5'2"). Yes, it is not a high fashion leather bag, and I did purchase this as a travel bag to take on my up coming sightseeing tour of New York, but I have been using it for over a month as an everyday bag, and I am spoiled by how easy it is to use and comfortable it is to carry. I am glad I got this size as it is not overly big but still substantial enough to carry essentials with ample extra storage left over for small purchases, a light sweater, gloves, hat, or whatever I might need to carry while on my trip. The break away strap has already come in handy at a restaurant or grocery store to attach to the chair, cart, if needed. I have not used the other security features yet in my small hometown, but will feel that my valuables to be very safe from pickpocketers in a big city. I will get rid of my wallet, reorganize my credit cards and cash in the proper places, and be ready to go with this comfortable bag. I am so happy I purchased this!