I use a Bodum French press travel mug. I have used a French press travel mug from REI in the past as well. I prefer the Bodum. I used it on tour and also weekly as I travel. Until last month I traveled all over the world on ships and hated the coffee, so I made my own in one of these. The Bodum seals well and keeps the coffee hot for a long time.

http://www.amazon.com/Bodum-Insulate...ss+travel++mug