HIGH QUALITY - Made from heat and condensation resistant borosilicate glass, which is more durable and perfect than conventional glass giving a smooth surface and crystal clear appearance. Cute Mugs Bear Panda Tea Cup Couple Glass Coffee Mugs. MULTIFUNCTIONAL - Can be used for Espresso cups Milk cups Tea Smoothie and Juice.Espresso cup made from lead-free, high-quality borosilicate glass. Food grade materials are healthier. GIFT IDEA - The matching cups are a perfect gift for all occasions such as Christmas Valentine’s Day Easter Weddings or as a birthday present for your girlfriend / boyfriend or parents. WEIGHT AND CONTENT - You can fill in up to 250ml/8.5 oz in each mug. CUSTOMER SERVICE - We are dedicated to offer you great customer service. Please contact me if you have any questions.