There is also the
Sea to Summit X-Mug & bowls that are actually mug and bowl sized. These fold down flat but again are quite heavy. I use the bowls and the plates and love that the bottoms of those two styles can double as a cutting board. The mug I like too but have to be careful of accidentally setting something too heavy on it or it will fold and spill its contents
tcl,
Have you used this with hot coffe or tea? I'm asking because according to some reviews
here at REI, the Seat to Summit mug works quite well for that.