This square stoneware bottle is approx. 7 tall by 4 wide inches and holds about 20 ounces.  Wheel thrown and then paddled square this bottle is a great utilitarian bottle with various uses for the reenactor.  It's tough and packs easily with your gear.  It also looks good on a shelf at home.

Of course it's food safe and meant to be used regularly.

Notice there are two different square bottles pictured.  The glaze used on these bottles can vary from firing to firing. This shows possible variations.