Cooler Bags Naturehike

[PREMIUM ICE RETENTION] Naturehike wheeled cooler with 5 sides of thick polyurethane insulation (the same material used in refrigerators) can keep your food and beverage cool for up to 98.5 hours with 75% ice filling. Test internal temperature range: 10.4-39.9℉. Ambient temperature at time of test: 72.0℉. Ambient relative humidity at time of test: 60%RH [FOOD SAFETY COOLER] Our 40-quart hard cooler features 2 food safety layers and food grade polypropylene material, which not only keeps food fresh but also ensures food safety. [ALL-TERRAIN WHEELED COOLER] Equipped with shock absorbing TPE wheels and a telescopic handle, the insulated cooler can be effortless traverse through rough