The French Press commute mug perfected.

The design is pure GSI genius. The plunger is the mug. No obtrusive rod to poke you in the eye as you drink, no grounds working their way around a flimsy screen. This is the portable coffee press perfected. 

A precision-engineered inner sleeve acts as a no-mess press, then becomes an additional wall of insulation to keep your coffee – or tea – hot.