This is a Ryukyu glass product, a traditional craft of Okinawa. Each piece is handcrafted by artisans, resulting in unique shapes and expressions. The air bubbles trapped within the glass are a distinctive feature, creating a unique character. The vibrant colors evoke the sea and sky of Okinawa. A small, beautiful glass. Size: Approximately 4 cm in diameter and 4.5 cm in height. How about a set of two? No box included. Will be carefully packaged and shipped.