Arizona, Vegas, the desert
Kat wrote that a 46oz Limitless still had a slushy the next morning after 118-degree Arizona. Andrea leaves a 36oz in the car during Arizona heat and the ice lasts for days. Patti left a bottle on the car at 114 degrees on a Hoover Dam tour and still had ice. Those are their reports. The rating is up to 36+ hours* cold with the lid closed. A parked car is water bottle that stays cold in a hot car.
For the heat
112 designs in stock. We quote owners. We do not publish a desert-hour test.
Kat's 118-degree bottle
The most water per fill that still fits a car cupholder.
Design: Sapphire Opal
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Andrea's Arizona car bottle
Ice-cold all day, three lids and one handle.
Design: Sapphire Opal
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Sylvia's Arizona overnight
A lighter everyday bottle that still holds ice overnight in Arizona.
Design: Sapphire Opal
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Handle-free, cupholder ready
Drops into a cupholder from any side.
Design: Sapphire Opal
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A full-day outdoor fill
128oz for a day outside. Too big for a cupholder.
Design: Sapphire Opal
See all 12 designs · PersonalizeIn the heat
Owner reports. The spec is up to 36+ hours* with the lid closed.
Kat wrote that a 46oz still had a slushy the next morning after 118-degree Arizona. Sylvia lives in hot Arizona and still has ice overnight. Those are their mornings.
★★★★★keeps cold for 24 hrs in 118 degree Arizona, I still had a slushy the next am!
Andrea leaves a 36oz in the car during Arizona heat. The ice lasts for days. A parked car is not a lab — the hot-car page is that question.
★★★★★I love how my drinks stay cold even when I leave it in my car during Arizona heat.
Patti left a bottle on the car at 114 degrees during a Hoover Dam tour. The mug was ice-cold when she opened it. That quote already sits on the ice page.
★★★★★It was 114 degrees out and I left it on the car while on a tour of Hoover Dam. … Popped open the top of the mug and water was ice cold and the ice was still there.
Tammy's husband works outside in the desert in extreme heat. The water stays cold all day. When he refills, he finds leftover ice. Rated up to 36+ hours* with the lid closed.
★★★★★We live in the desert and he works outside, sometimes during extreme heat. … The water stays cold all day. When he refills, he finds leftover ice.
In their words
Exact words. First names only. Canvas 128 / 28 was not reproduced — about 67 reviews / 12 photos.
★★★★★keeps cold for 24 hrs in 118 degree Arizona, I still had a slushy the next am!
★★★★★I love how my drinks stay cold even when I leave it in my car during Arizona heat.
★★★★★I live in hot Arizona so I want my drinks cold … This keeps my drinks cold all day and even overnight!!!!
★★★★★We live in the desert and he works outside, sometimes during extreme heat. … The water stays cold all day. When he refills, he finds leftover ice.
★★★★★It was 114 degrees out and I left it on the car while on a tour of Hoover Dam. … Popped open the top of the mug and water was ice cold and the ice was still there.
★★★★★Coldest stays cold all day even in the heat of the desert.
★★★★★It has been so hot in Phoenix for so long. … Love, love, love how my water is still cold!
Questions
★★★★★keeps cold for 24 hrs in 118 degree Arizona, I still had a slushy the next am!
Keep looking
For the desert
112 designs in stock. 46oz is the cupholder fill.
Rated up to 36+ hours* cold with the lid closed. Owner heat reports are not a spec. Reviews are quoted in their own words, first names only.
