I bought one after seeing it mentioned many times here and have been... less than impressed. It doesn't really seem to regulate temperature at all. It keeps t

I bought one after seeing it mentioned many times here and have been... less than impressed. It doesn't really seem to regulate temperature at all. It keeps the drink warm for roughly the same time as a standard contigo mug, but doesn't bring the temp down even a little bit from where it is prior to being poured. Tested using a thermapen.