Chrome Falcon Messenger Backpack Black/Black, One Size Use: Our most popular, medium size, &#8220;go-to&#8221; messenger pack for those who want the durability of a messenger bag with double the strap support. Rideability (out of 3): *** Laptop Compatibility: Up to 17&#8221;. No integrated laptop sleeve. Organization: Side water bottle pocket. Two external pockets for wallet, keys, phone, and other essentials. One vertical external slot for pens or tools. An elastic band between the shell and outer flap stores your bike pump. The inside is basically a big waterproof bucket within the bag. Between the liner and outer shell, there&#8217;s a medium-sized stash for added storage and organization. Typical Haul: Laptop, bike pump, tools, change of clothes, water bottle, lunch, and a couple books or a light to medium grocery run.