This is the perfect bag for everyday office lunches!!  It's the same size as your average shoulder bag, the straps are wide enough to be comfortable, and the bag lays nicely against my body while I am carrying it. Given its price, it's much nicer looking than you might expect.  Although the material is obviously nylon, the color and design are sleek and professional, and if I am out of the office in all-day-meetings, I have no problem bringing this with me and storing it with my purse.

I was also pleasantly surprised at how much I could fit into it, because it really doesn't look that big from the outside.  I use glassware for food storage&nbsp;&nbsp;and can fit one large container plus two small containers into this bag with room for two ice packs, a can of soda, and a few Ziploc bags with veggies, nuts, etc.  I cannot, however, fit my bottle of Smart Water into it -- it's too tall for the bag to zip properly and there isn't enough room to lay it down. I don't tend to carry my water bottle in my lunch bag anyway, but I thought I'd mention that as an FYI for those of you who may want to.

Finally, in terms of its insular qualities, I have found that I do not need to keep this bag in the office refrigerator if I am only packing lunch foods. If, however, I have perishable leftovers that I want to bring home, I will put the bag in the refrigerator after lunch. I usually pack my lunch around 6 a.m. and eat around 12 - 1 p.m., at which time my food is still cold and my icepacks are still frozen/cold.  However, by the time I get home around 7 p.m., the ice packs are a little cooler than room temperature, and while my leftovers may be cool, they're definitely not refrigerator cold.