I have and love my Yeti 10oz lowball. I use it for coffee in the morning, on the way to work, water throughout the day, and whiskey and/or beer in the evenings. It's 10oz, but will hold a 12oz beer. I have the optional top also.

My buddy and his wife hung out with us at the cabin this weekend and he had one of those beer huggers from Yeti. It's nice and I really like the size of it. I wish there was a way to have a different screw on top on that beer hugger where you could turn it into a cup. The reason being is that it would serve my needs just a good as a Rambler Lowball, but fit in most cup holders better.

By the way if you have a Yeti [or similar] Lowball, you can take a regular neoprene beer hugger, put it around your can and then slide the whole thing into your Lowball and it makes a nice beer coozie.