OGIO Endurance 9.0 Endurance Bag 

"My last cycing bag purchase was a poor experience. Lots of compartments but the "waterproof" zippers were extremely hard to close and the bag sagged in the middle when I picked it up by the shoulder strap making it a chore to carry. It was generally a hassle to use and oversized for the purpose. With this in mind, I looked long and hard before taking the plunge on a new bag. I cannot say enough GOOD things about this Ogio 9.0 bag. It has a compartment for EVERYTHING and it is very well thought out. The backpack straps are very comfortable. The bag doesn't sag. The ventilated wet area is phenominal as is the shoe storage (two pair) and helmet sleeve. The bottle slots are very secure and fit the large 25 oz. Camelback water bottles snugly. And this is the first bag I have owned where I feel I can leave my sunglass hard case behind! The sunglass case is simply awesome and even includes a divider for multple lenses or other items needing protection. The initial quality and durability seems exceptional but only time will tell. I will say that I still have my 20 year old Ogio "locker bag" although it doesn't get much use these days. Yes, it's more expensive than my old cycling bag but the value and quality are much better. It has every single feature a cyclist might need for a day trip (or two) to a race or rally so if you are looking for a cycling bag, look no further. The only thing I would tell Ogio would be to add more colors!"