Amazon.com: FITY (2 Pack) - A 12oz can Adapter for 16oz Can Coolers Tall Beer Soda Drink Cooler Cozy Insulator Spacer Extension, Compatible with YETI MiiR CamelBak BruMate: Home & Kitchen
YETI Rambler Colster Stainless Steel Black Bottle/Can Holder at Lowes.com