I bought this cooler to mount on the back of my ATV. I put roughly 5lbs of ice in this Monday morning before leaving for a week long riding trip in the hills of West Virginia. I have this cooler mounted directly above my muffler, after four days and 250 miles of riding I still had ice. The seal on the lid works great it kept the mud and dust out. This was large enough to hold drinks and lunch for two people for the day. The only way I could improve this would be if there was a more custom fit/mounting option for my application.