Kubakasa Ryukyu Glass Rock Glass Okinawa Souvenir Churaumi Bumpy Glass Green Cold Tea Glass Cup

All products sold in our store are manufactured for the Japanese domestic market. Therefore, please note that depending on the manufacturer and the product, specifications may differ from those in your country of residence, even for the same product.

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device's requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. [Material: Soda glass][Size: Height: approx. 9.4cm, Mouth diameter: approx. 7.4cm, Width: approx. 7.7cm][Weight: approx. 290g][Capacity: approx. 320ml (when full)][Manufacturing method: Ryukyu glass product made using the glassblowing method][Country of origin: China (※Food safety inspections in Japan have been completed)] The origins of Ryukyu glass... It is believed that Ryukyu glass production began around the mid-Meiji period. Among the many traditional crafts of Okinawa, it is a relatively new craft with a short history. Mass production began shortly after the war, when it was made for American soldiers stationed in Okinawa. It is said that the colorful Ryukyu glass that continues to this day originated from recycling empty soft drink bottles discarded by American soldiers who occupied Okinawa at the time. The Development of Ryukyu Glass... Due to the historical context of the continued presence of the American military after the war, Ryukyu glass underwent remarkable development. At that time, the raw material for Ryukyu glass was mainly recycled glass. It was thick, contained air bubbles, and the colors were not the vibrant primary colors of today, but rather dull, transparent colors. However, it lacked the transparency, coolness, and delicacy characteristic of other glassware, and its deep colors and unique air bubbles were appreciated as a charming feature unique to Okinawa, leading to its current form. Air bubbles, which would normally be considered defects, have been incorporated, utilized, and deepened as characteristics of Ryukyu glass, and even today, with more workshops using raw glass, they are passed down as a simple charm and an art of light. The heart of a Ryukyu glass craftsman... There are two methods for making Ryukyu glass: "free-blowing," where glass is wrapped around the end of a blowpipe and shaped by blowing air into it, and "mold-blowing," where glass is blown directly into a mold. In the glassblowing process, the shaping must be completed before the glass cools completely. The glass, heated by flames reaching 1400 degrees Celsius, is molten and constantly moving like a living thing. It is a job that requires constant vigilance, The heat will be beyond imagination. In such conditions, by aligning oneself with the movements of the glass, which seem to possess a will of its own, and by confronting the inherent characteristics of the glass, the colors and brilliance of Ryukyu glass are born that transcend the will and skill of the craftsman. About our glass products... All the glass products we carry are handcrafted one by one by skilled artisans. No two pieces are exactly alike in color or pattern; each has its own unique character. Please understand that this is one of the charms of handmade products. Please enjoy the handmade charm created by skilled glass artisans. Precautions for use: This product is not made of heat-resistant or tempered glass. Please refrain from using it in dishwashers, with hot water, boiling water, or in microwave ovens. Glass products can break due to sudden temperature changes. Please be careful not to cool or heat it rapidly. Product Details [Product Name] Churaumi Dekoboko Glass [Material] Soda Glass [Weight] Approx. 290g [Capacity] Approx. 320ml [Size] Height: Approx. 9.4cm / Width: Approx. 7.7cm / Diameter: Approx. 7.4cm [Manufacturing Method] Ryukyu glass product made using the blown glass method [Country of Origin] China [About Ryukyu Glass Products] Ryukyu glass products are handmade one by one by glass artisans. There may be individual differences in size, and the size dimensions listed are average values. There may also be differences in color and the way air bubbles are incorporated from piece to piece. Please enjoy the handmade charm created by skilled glass artisans. [Precautions for Use] This is not heat-resistant glass or tempered glass, so it may break if subjected to sudden temperature changes. Do not use in dishwashers or microwave ovens. Please also avoid using it for hot drinks, boiling water, washing with hot water, or freezing.