Galleyware's exclusive 12-oz. non-skid polycarbonate tumblers that come with a lifetime warranty and a great price point!  The Captain Series includes one each of Cape Hatteras, Cape Assateague, Cape Canaveral and Cape Barnegat.  These are double insulated tumblers meaning that there are two tumblers in one.  The air space in between the tumblers keeps hot drinks hotter longer and cold drinks colder longer.  Plus, they have a non-skid ring to prevent sliding and most importantly, they have a flat bottom so they don't tip over when the boat heels.  And, they're priced 30% less than the name brand.  4 per box.