Perfecta Travel Coffee Mug,(16 oz) Durable Cover with Double Wall Internal lining,Grey, Guaranteed ! This Perfecta brand of Coffee Mug has a durable lid and unbreakable. Beautifully designed for hot and cold beverages with 16 oz capacity. It has a sleek look and fits perfectly into most automobile cup holders without shaking. For effective insulation technology, it is recommended to pre-chill or pre-heat the mug prior to use by simply filling it with hot or cold water, cover it up for few minutes, then pour water away before use. Safety Warning :"Please do not place in a microwave"