Check the listing for details. YETI Rambler Colster 2.0 Adapter 12-16 oz Tall Boy Extender (2nd GEN ONLY). Condition: New. Listed at 14.99 USD. YETI Rambler Colster 2.0 Adapter 12-16 oz Tall Boy (2nd GEN ONLY). - PLEASE READ BEFORE PURCHASING: THIS ADAPTER ONLY WORKS WITH THE YETI RAMBLER COLSTER 2.0. (The older style yeti colster has a different lid design / threads and this adapter won't work with it.) - This adapter lets you put 16 oz cans (tallboys) in a 12 oz Rambler Colster. Made from high strength durable PLA plastic with threads on both ends. If you have multiple adapters they screw together for easy storage. - Made in the USA. - FAST and FREE shipping from the USA. - YETI Rambler Colster and drink NOT included.YETI Rambler Colster 2.0 Adapter 12-16 oz Tall Boy (2nd GEN ONLY). - PLEASE READ BEFORE PURCHASING: THIS ADAPTER ONLY WORKS WITH THE YETI RAMBLER COLSTER 2.0. (The older style yeti colster has a different lid design / threads and this adapter won't work with it.) - This adapter lets you put 16 oz cans (tallboys) in a 12 oz Rambler Colster. Made from high strength durable PLA plastic with threads on both ends. If you have multiple adapters they screw together for easy storage. - Made in the USA. - FAST and FREE shipping from the USA. - YETI Rambler Colster and drink NOT included.