Double-Wall Insulated Glass Espresso Mug 350 ml / 12oz Double-wall coffee glass with 12-ounce capacities (350ml),keeps your beverage (hot or cold)more longer while at the same time protects your hand ,ensuring that anytime you touch it with comfort and safe. Borosilicate-glass construction; durable and heat resistant Advanced hot and cold drink insulation with double-walled design,which balance the pressure between the two layer and ensures that the glass wont suffer any damage from sudden changes from hot to cold temperatures in the bottom of mugs. Safe for dishwasher and microwave use; not for use with metal utensils For coffee, tea , juice or milk , recommended daily home , hotels, restaurants , clubs , cafes or office use.