Handcrafted high fire porcelain tumbler cup with crystalline glaze. Kick up cocktail hour with Indikoi ceramic tumblers! Our multi-purpose cups are perfect for cold beverages, hot beverages (just don't fill to the tippy top) and they make great flower vases. Our pottery is fired to 2300ºF making it extremely strong and durable for everyday use. All our functional pottery is food ware safe, dishwasher and microwave friendly.