Purchased 77 quart cooler in April: Two trips...
Trip 1 was short, Las Vegas....
Trip 2 was 7 days, North Rim Grand Canyon & Zion

This is trip 2
My ice bottles used for packing [purchased 2 - 12 packs of 1 liter bottles], froze at home, Day of trip packed food in layers with ice bottles for water. I always add  towels for more insulation to completely fill freezer....want it packed without too much air space.

The only problem: I thought [erroneously] that cooler would be good for 2 or 3 days....so when we needed water for hikes, etc., had to take bottles out....if placed on top, still too cold...needed to sit 12 hours or so...

Bottom line: Great deal, never had an experience where cooler actually functioned...had ice longer than advertised. My old Coleman was only good for 24 to 36 hours in Fall or Spring.

Lifetime cooler had ice bottles after 7 days