Typical backpacks for adults are large and can be hot when carrying them on the back due to their size. This backpack is smaller, lighter, and just the right size for day use or shorter trips. It's designed very well with durable water resistant material and two main pockets with heavy duty zippers that can be locked with mini locks and a small open front pocket for keys or a phone. It includes a hydration bag. There are numerous outer pockets, vented padding, and two support straps on each side to keep the contents secured and close to the body. I definitely recommend this backpack!!

I bike to work all year long and this has been my practical and reliable backpack for a few years.
Pro: Good carrying capacity for commuting. Lots of pockets and adjustment straps. Comfortable and affordable. Great warranty.
Minor cons: Mine is fluorescent green, which is a great colour for cycling but no longer available.