The ever popular Moscow Mule cups are here. These 41/2 inch, personalized copper drinking mugs are a must have for any adult. With its double wall construction, allowing insulation, these mugs can be used for hot or cold liquids. Available in both silver and copper you have two options for personalization a silk screen or laser engraving. Silk-Screen: 1 ¾" W x 1" H These mugs are a great way for your guests to remember any corporate event or special celebration.