I was wondering if anyone has experience with Sierra cups? They always struck me as being too shallow to be very useful.

I don't own one, but the Space Saver cup seems to be just about right to me.

Personally, I've always relied on my stainless steel GI canteen cup. While the kidney shaped cross section is awkward for some purposes, it can be and advantage when heating pouched ready to eat foods while still in the pouch.

- Tom