Rotomolded cooler marketing claims vs real-world performance: Plan for 3 days, be happy with 5

Manufacturers claim 7+ days in ideal 70°F conditions with pre-chilled coolers and block ice, but in 90°F heat with standard use, you get 3-5 days. Block ice gets you closer to 5 days; cubes knock off a day. Pre-chilling helps, but insulation only slows heat transfer—it doesn’t stop it. Plan for three days, be happy with five.