ITEM NAME:Clear Glass Cups Double-Layer Glass Coffee Mugs 150ml Dishwasher. Microwave, Description: Keeps Hot Or Cold Drinks Longer double - layer glass Transparent Coffee CUP Insulated, clear glass coffee mug is Heat Resistant(-20℃-150℃) & Explosion-proof The espresso cups are made of Borosilicate Glass that is a kind of healthy drinking glassware, Lead free, Non-toxic, Odorless Specification: Material: Borosilicate Glass Size(DiameterxHeight):8x8.5cm/3.15x3.34 inch Package Includes: 1 Pcs Glass Coffee Mugs SKU: ALU0022959872009925.1 Pcs Glass Coffee Mugs. Insulated, clear glass coffee mug is Heat Resistant(-20℃-150℃) & Explosion-proof. Transparent Coffee CUP. Material: Borosilicate Glass.