Barstow Insulating Mug The Barstow Insulating Mug is a mug made of stainless steel. The mug is fully closed with the lid. The contents of the mug is 330ml. You can bring the mug for example, a meeting. The Mug has earpiece on the side of it. Through this earpiece is the chance that you burn your hand immediately removed. The mug can be washed in the dishwasher. The Barstow insulating Mug can be printed with your own design or logo. You can print your design or logo in up to 4 colors. Also, you can engrave your design or logo. The Barstow Insulating Mug produced BPA Free.