Introducing the Peterbilt cup holder adapter, designed specifically for your 30-oz Yeti tumbler, 24-oz stainless steel sip water bottle, and 40-oz tumbler with handle (all not included). Made by a professional driver, for the professional driver, this versatile adapter also fits a 12-oz aluminum soda can and a 16.9-oz water bottle, making it perfect for all your hydration needs. 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. For optimal convenience, we recommend purchasing two adapters to utilize both cup holders in your Peterbilt truck. To ensure a secure fit, we suggest using double-sided tape or nano-grab double-sided gel squares to anchor the adapter in place.