>Another good design (I still have it) although single-wall, uses some kind
>of very thermostatic plastic and keeps the tea hot for quite some time. It
>has a mesh filter too.

Hi Alex,

My buddy from Kunming sent me one of this design. It is his everyday
cup that he carries to work. I have been using it daily since I got
it. It is absolutely great! The trick I found that makes green puer
work better is starting with lower than normal temperature water and
get a little hotter with each refill. I get 3-5 good refills per day
out of it. It is a simple design and it works.

Mike Petro
http://www.pu-erh.net
remove the "filter" in my email address to reply