Yes, a 24-ounce Hydro Flask should fit in standard car cup holder. What size mason jar fits in a cup holder? Any 24-ounce mason jar should fit in a car’s cup holder. But, anything larger than ...

The Hydro Flask vs. Stanley debate has fans on both sides. ... N othing turns around a sluggish morning like a fresh cup of coffee, whether it's from a pour-over or a single-serve coffee maker.