The Timbuk2 Spire, is a bag that offers versatility. This backpack has understated urban vibe. It’s lightweight, plus rip and water-proof. On the outside of the bag, there’s a ton of loops you can attach carabiners to to hold whatever you might need. One unique feature of this bag is the large velcro strap that runs across the front. The thick strap has Velcro on the outside and inside so that you can attach various things to. A U-Lock would certainly be securely fastened here.
On the left side of the bag you have even more straps and loops to utilize. Then on the right side is a handy water bottle holder. The most visible outside pocket of the Spire opens up to a external zippered pocket good for items you want easy access to. There’s a mesh liner that gives some separation within the pocket as well. On the right side of the Spire there’s a less obvious zippered side pocket that conveniently runs the width of the backpack.
The zipper on the back of the bag just below where the top of the straps attach gives you direct access to the inside of the bag above the electronics pockets. This makes getting out your laptop or tablet a lot easier than most roll-top bags.
The Spire is best suited for an on-the-go bag when traveling around the city or elsewhere. The straps are minimally padded so the bag is not to bulky. It also offers a removable sternum strap.