At first, I was disappointed in the apparent quality of this cooler. I had owned an earlier version which seemed more sturdily built. On the very first day, I accidentally dropped this cooler and the top would not "click" detent into position. I did not know it was a simple dislocation. I tried fiddling with the latch mechanism without removing the cover with no results. The cover would simply slide from side to side without locking in the center. I was tempted to return the unit when I realized I could disassemble the cooler top from the main body. When I disassembled the unit I could see that the latch assembly was dislocated from the track on the interior side. I positioned the latch so that it was centered on the track and reassembled the unit. It still didn't latch properly. Turns out I reassembled the top with the track on the wrong side. My bad! After I repositioned the top, the cooler works great! A bonus is that this cooler is a little larger in the interior than my previous unit.