My review and purchase of the Klein Tools 5102-18SP tool bag may seem odd to some. My use is definitely an unconventional use. I'm a delivery driver, I have two overnight routes per week. Food on the road is hit or miss, fast food is NOT a good choice and I prefer not to "waste time" trying to find an actual restaurant along my routes. I prefer to bring food from home. It's obviously more healthy and definitely cheaper. I purchased a Yeti knockoff cooler ( $200 cheaper and works just as well) 44 qt. I would pack my food in travel bowls , load them into cheap canvas " shopping bag" type tote bags. They seem to fit ok in the cooler, but only seemed to last a few weeks before the stitching would give up. I got tired of these canvas tote bags failing so I thought.....why not a Klein Tools tool bag?I can pack my lunches for the two days, dinner for the overnight and breakfast items for the second day. I also pack drinks. Usually 2 20 oz sparkling water cans, a can of Mt Dew Quick Start, 2 16 oz bottles of Vernors Ginger Ale. A small container with a variety of tea bags, a zip lock with salt/pepper/ flatware and a jug of honey.I know....TMI? Well, just letting you know what will fit into this particular bag. Loaded up, it fits perfectly into the 44 qt cooler. I simply grab the Klein Tools bag out of the cooler and carry it into the hotel room.My per diem is supposed to cover my room and dinner for the first day. Bringing food from home, I can pocket the per diem not used for the room. Within a month, the cooler paid for itself by NOT buying food on the road. The Klein Tools bag paid for itself as well, in just a couple of weeks.My use is obvious not the normal use for a Klein Tools tool bag, at least not the one I use for the cooler. My other Klein Tools bags carry, well tools... I hope this long review helps you decide on this bag. It's worth every penny.