YETI's Rambler Bottle Chug Cap satisfies big thirst's fast with lightening fast opening capability and it's extra Large opening. Suck down those cold liquids like there's no tomorrow, pop and twist the top with it's convenient carrying handle and you're ready and off for any new adventure. When big thirsts demand fast satisfaction, you need the dishwasher safe and shatter resistant Rambler Bottle Chug Cap by Yeti. Oh, one last thing. This cap is NOT intended for hot liquids for obvious reasons.