Five Features of "Fuwan" Feature 1: Microwave-safe. Feature 2: Doesn't get hot to the touch. Feature 3: Less condensation. Feature 4: Keeps drinks hot or cold for a long time. Feature 5: A completely new design. Usage: For hot water Usable Capacity: 180ml Outer Dimensions: Height 89mm x Outer Diameter Φ92mm / Bottom Φ55mm Inner Dimensions: Height 74mm / Mouth 68mm / Bottom Φ55mm Weight: 135g Heat Resistance: 120℃ Country of Origin: China "Precautions for Use" ・ Glass can break. Handle with care when washing and using. ・ Do not put directly on a flame. ・ Rapid cooling of the glass can cause breakage. Do not touch with a wet cloth or place on a wet surface while hot. ・ Wash before use. ・ Do not use items with cracks, chips, or severe scratches, as they may break unexpectedly. ・ When handling broken glass, take care not to get injured. ・ When disposing of the product, follow the instructions of your local municipality for separation. ・ When washing, use a mild detergent on a soft sponge. ・ Do not use cleansers, abrasive materials, or sponges with abrasive particles, as they can cause damage. ・ When using ice, insert it slowly into the glass. Inserting it forcefully can cause breakage. ・ Do not hit or rub the inner surface of the glass strongly with a metal spoon or other objects. This can cause breakage. ・ The outer bottom has a lid attached with adhesive for manufacturing reasons. Removing it may create a hole. ・ This product is handmade by artisans, so there may be individual differences (size, tilt, cut glass, color unevenness, etc.).