Glass Lined Whiskey Glass - BlackEnjoy A New Take on an Insulated Refreshment! Our Whiskey Glasses are glass lined, so you can take your whiskey neat, or on the rocks, without that metallic taste or smell. The exterior is made of stainless steel, which will keep your whiskey at just the right temperature, so you can enjoy it at your pace. The glass insert is dishwasher safe and comes with a sip through lid. Holds 12 oz. How It Works Soft touch exterior feels great in your hand.