Specification: Item Type: Double Wall Glass Coffee Cup Material: High Borosilicate Glass Color: Transparent Capacity: 320ml Weight:Approx. 345g / 12.2oz Upper diameter: Approx. 8cm / 3.1in Bottom diameter:Approx. 5cm / 3.1in Height:Approx. 14cm / 5.5in Package List:1 x Double Wall Glass Coffee Cup Features ☕ Double Layer Spiral: The clear glass mug adopts an innovative double-layer spiral design, keeps the cup safe to touch with hot drinks, and keeps separate condensation from cold ones. And also keeps your drinks hot or cold for longer than one layer of glasses under the same conditions. ☕Borosilicate Glass: Adopting superior borosilicate glass, the cup is made lighter, more clear, and explosive-proof to high temperatures. Glass coffee cup double layer heat insulation and anti-scalding, and the overall elegant shape is simple. ☕ High-Temperature Resistance: The glass mug is resistant to high temperatures, can withstand ‑20~150℃, has no fear of hot and cold, and is more reliable to use. ☕Handmade: Thanks to the high-quality workmanship of the double spiral design, the glass is wonderfully light and clear for easy and pleasant use. ☕Lightweight Transparent: Double wall glass coffee cup has a transparent texture, clear and shiny, and has a textured grip.