I use this bag while riding dual sport motorcycles. The water bladder is good for riding hard for a half day and even more. The great hip pads ensures the pack stays secure. Several itemized pockets to keep things organized.
Took this on a 96 mile ride and did not regret. There is room for bike tools and food. I did not use the hydration sack so had additional space for a bike lock and food. Did not even notice it was there when riding. Backpacks become uncomfortable for me after about 30-40 miles of riding so this was a welcome alternative. Like the zip pocket in the padded waist belt to store keys/wallet for easy accessibility. Purchased this on sale so the price was right as well. Anticipate using it frequently, including for bike touring in the future.
I use this for my 30 minute ride to work. It is so nice to have my tube, pump, levers, lunch, + hydration of choice, all with no back pack. Check this product out- the design features are many and well thought out. I really love it.