How long will the Terracotta Orange 30oz tumbler actually keep drinks cold in Dubai's summer heat?

We conduct all thermal testing in actual Dubai environmental conditions because that's where you'll use your tumbler. For the Terracotta Orange 30oz tumbler, we performed extensive cold retention testing during July and August when outdoor temperatures consistently exceeded 45°C and car interiors reached 65-70°C. Test methodology: filled the 890ml tumbler with water at 4°C and added standard ice cubes from a residential freezer, sealed the 2-in-1 lid completely, then exposed the tumbler to typical Dubai scenarios—left in a parked car in sun, carried in non-insulated bags, stored in air-conditioned offices, etc. We measured internal temperature every 2 hours for 36 hours. Results exceeded expectations: After 12 hours, water temperature was 5°C with approximately 65% of ice still in solid form.