This is the Garter Mug Cozy from Interweave Knits Holiday Gifts magazine.

Bottom view:

I had to take this pattern and add many more increases (the pattern tells you how to make this customized to the size mug you own). I am planning on getting some eyelash yarn to jazz this up a bit for my friend who has a HUGE mug and is quite the pizazz princess.
I knit this with Lion Brand 100% Wool in the color Rose. The yarn is on the rough side but I didn't block it to see if it softens up. Double points size 7.
This is another version of the same cozy. I made this one for Popeye to go with his new navy blue mug. I used Paton's SWS yarn (70% Wool, 30% Soy) in the Natural Navy colorway. This yarn is VERY soft and was okay to work with. The twist leaves very easily, but it wasn't hard to work with.

I made these cozies for my friend who loves Starbucks. I found the pattern here while I was looking for something else. The original pattern makes the Grande size. I modified the pattern to make one for the Tall size. I plan to make the Venti size for myself. I used Noro Kureyon #188. (Double points size 7)






















