I bought Maxpedition's Versipack 4 years ago and it's seen the following uses...

1. Manly looking diaper bag
2. Manly looking supplies when she didn't need diapers anymore
3. Lunch bag
5. Range day bag at work
6. Day trip bag

The large pouch on the side holds a large litre bottle of water very well. Zipper pocket on the flap is a perfect fit for my wallet. A bit of serendipity; my phone just autocorrected "flap" to "flask", which also fits perfectly. The main pouch has an extra small pouch inside that holds an ice pack out of the way, perfect for lunch. Side pocket has a great interior for a pill case & hand sanitizer. There's another I didn't notice for a few weeks that I kept a few folded up lunch paper lunch bags in when she was a toddler for clean up at restaurants. Servers appreciated that. I put my keys on the clip. There's an extra bit on the strap for a pocket knife. The strap pad actually works really well. Under the flap is a zippered bit that holds pens, et cetera nicely. Finally, the backmost compartment holds my duty pistol (Smith & Wesson M&P .40, 4" barrel w/attached light & 2 spare magazines) snugly.

If this bag isn't enough for my day, I grab a full back pack. The nylon is really durable, but I broke the buckle.

All that aside, anything dressier than a polo or rugby shirt and I'd carry it by the handle rather than across my back.

https://www.maxpedition.com/collecti...nt=25898234184