Laser Engraved Stainless Steel Mugs feature double-wall, vacuum insulation with a clear lid. They are 2X heat and cold resistant compared to other tumblers. They are made from 18/8 gauge stainless steel (18% chromium/8% nickel) - also known as Type 304 Food Grade
Stainless Steel Straw and Straw Cleaner included with Skinny Light Pink Tumbler
Cleaning Instructions: Not recommended for dishwashers, hand wash only.