Medieval Drinking Black Beer Horn Cup with Brown Leather Holder Belt The horn cup is range between 6" - 7" length and can hold up to 4 - 6 oz of water. It have been varnished on the outside and sealed with a resilient watertight finish on the inside. This drink holder easily hang on your belt. It is able to fit cups, cans and bottles of all kinds up to approximately 3 inches diameter.