How long does the Light Sky Blue 30oz tumbler keep drinks cold in Dubai?

We tested the Light Sky Blue 30oz tumbler during Dubai's peak summer with temperatures exceeding 45°C. Ice remained solid for over 24 hours even in parked cars exposed to direct sun. After 30 hours, water temperature was still 11°C (refreshingly cool). This performance comes from double-wall vacuum insulation that eliminates air between walls, preventing heat transfer. The Light Sky Blue powder coat also reflects solar radiation, helping keep the exterior cooler in direct sunlight compared to darker colors.