insulated mug with a lid 280 ml 5927M Tac insulated mug is made of stainless steel, so it has a strong and durable construction. Double wall vacuum technology does not allow the drink to cool down, and the outer walls to heat up. Therefore, with this mug, you dont have to be afraid of burns. The lid has special holes for drinking. This allows you to drink your favorite drinks without removing the lid and the drink keeps the temperature longer. The mug has powder coated outer walls which