I have another cheap esky that keeps beer cold for 24 hours, that's sufficient for what I need it for. This thing is actually thicker, so reckon it will hold up just fine.
Whatever the situation, better than an esky with an open lid, a parka jacket or the foam ones.
Purpose is mostly for taking to bbqs, parties, fishing days, work balcony, etc.
If I need something for more than an evening or day, I also need more beer... In which case I'll take my portable 19L rig. That thing kept beer at 2 degrees for 3 days.
Worst case the kmart esky fails to live up to expectations it was $35, one of the cheapest components.