Hands down the BEST cup holder you will ever use. No rattling, no shaking loose, no falling out. It will hold if you are upside down, however in this case, the drink will pour out of the cup so drink up quickly, but the cup will stay in place.This cup holder has been tested, you will not lose your cup!The flush mount cup holder is made for the Milwaukee Packout Drink Tumbler. The way these cups work is you place the cup in the holder and twist it. It locks in place and will not come lose no matter how bumpy or what angle you are on, even upside down.

The dual cup holder is made for the Milwaukee Packout Drink Tumbler. The way these cups work is you place the cup in the holder and twist it. It locks in place and will not come lose no matter how bumpy or what angle you are on, even upside down.
 
The Milwaukee Packout Tumbler features:
Smooth Open and Close Top
Double Wall Vacuum Insulation
Dishwasher Safe
All-Day Hot & Cold Retention
 
For your convenience, you can choose to purchase the cup holder without cups, with 20oz cups, or with the larger 30oz cups. Of course, you can purchase them yourself using these links:
For the 20oz cup, click here.
For the 30oz cup click here.