This is a decent lunch bag, as plenty of space and keeps my drink and stuff cool for the 4-5 hours needed, and is still cold when I unpack at the end of the day. I'll be curious how it does during the summer. I do leave this in the floorboard of my car in a covered parking garage (not in the sun). Plenty of additional storage areas and can expand.. Zippers haven't gotten into a bind but I feel they may at some point.. They don't feel high quality. For the price I'm happy with it, versus double or triple the cost for some other brands.