CwC PURE COPPER HAMMERED BEER MUGS FOR PERFECT COCKTAIL SETUP Supreme Quality Copper: The products manufactured by CwC are made of top notch copper metals and the longevity and durability of our product is unbeatable. Food Safe: The products by CwC qualifies a set of tests prior delivery and are FDA approved which means it is extremely safe to store consumables in this copper mug. Copper has antibacterial properties and promotes good health by leaching into the drink. NOTE: Do not store consumables that tend to react with copper metal such as dairy products, citrus liquids, etc. Hand Crafted/ Perfect Gifting option: This Premium Set of 2 Copper Pipe Hammered Mugs made of 99.5% Pure Solid Copper by CwC is crafted under the supervision of experts by Indian craftsmen. The work of these craftsmen is extraordinary and leaves the on lookers in awe. Besides being really useful, this set can be a perfect gifting option to present to your loved ones. Lifetime Warranty: We offer LIFETIME WARRANTY on this product. We not only take responsibility of this product for forever but we are greatly concerned about your experience with us and our product. NOTE: DO NOT wash this with a coarse scraper as it will damage the finish of the product.