If you're going to get a YETI (or a an off-brand YETI), I'd recommend one of their Ramblers instead of any of these metal koozie things.

IMO, Koozies are best for the fact that you can fold them and keep them in your pocket. They're good for keeping beer kinda cold and your hands dry, but I mostly use them for finding which beer is mine at a party.

The Rambler cups allow you to smell a good beer - especially hop-bombs with a full nose or something else you're excited to smell while you drink - while also allowing you to use them for coffee, Arnold Palmers, margaritas, whatever-the-hell-you-want. Since the YETI or RTIC koozies don't fold, they're just as useful and transportable as the Ramblers.

During a beach vacation last week, I used my Rambler for coffee in the mornings, rinsed it out and filled it with beer at the beach, rinsed it out and threw in some margarita at night, then rinsed it out for ice water before bed.