This is a handmade cup made from Stoneware clay on the pottery wheel. It was dipped in a wood ash glaze called Copper Red glaze. It was dipped in a Copper Red glaze and fired to about 2300 degrees F. in a natural gas kiln. It measures about 6" tall by 3.5" wide. The cup is 100% functional, dishwasher safe and microwaveable.