Introducing the Peterbilt front cup holder adapter, expertly designed for the passenger side under-dash cup holder. Made by a professional driver, for the professional driver, this adapter securely fits a 30-oz tumbler, 20-oz travel mug, and 24-oz insulated metal tumbler with straw (all not included), ensuring your drinks stay in place while you drive. Not only does it protect your Yeti tumbler from falling to the floor and being damaged, but it will also protect the interior of your truck from unnecessary spills or messes. While it can technically hold a 12-oz soda can and a 16.9-oz water bottle, they may not fit snugly, so we recommend using them primarily with the larger drink options for the best experience. For added stability, we suggest using double-sided tape or nano-grab double-sided gel squares to secure the adapter within the cup holder. Enhance your Peterbilt with this practical addition for effortless hydration on the road.