KEYNICE Smart Car Cup Warmer and Cooler, Smart Temperature Control Electric Mug Holder, 12V Smart Heating Cooling Car Tumbler Holder for Traveler Road Tripper- Black

A 20oz plastic soda bottle does not fit. 12oz soda cans and small water bottles is all. I reuse a resealable 14oz milk bottle, filling it with water or cold coffee. It fits fine and stays cold.This is *NOT* a refrigerator, it is designed to keep cold beverages cold. Do not expect it to chill a room temperature drink. I do not consume hot liquids, have not comment about using it for hot liquids.

Very very hot,Very hot cup holder , I use for cooling my drink about 30’ ,I check up the cup bottom holder , it very hot I disconnect power quickly , because I care it will burn my car . Waste money …

The holder for the cups in the car is very hot, and there is no cooling effect

It doesn't work as much as I expected. It's unable to chill my drink to my satisfaction, but it's definitely not a bad product. I'm sure you could improve upon it. Cheers!

thank you seller i like it

Did not work! It would get cold than within about1/2 he it would get warm!

Only keeps the bottom half of a plastic water bottle cool.

Does its job and then some. Both heating and cooling functions work perfectly! So ideal for summer road trips.