SIC- Seriously Ice Cold powder coated insulated stainless steel tumblers are powder coated at the factory not after market like the previous leading seller's are done. SIC offers a lifetime guarantee on their tumblers. This information will be provided in the contents of the tumbler when purchased. This is a factory guarantee with SIC and is not with Monograms Markings and More. We feel confident you will LOVE this tumbler that has proven to keep liquid cool 24 hours and hot 8-10 hours. The perfect tumble! Add a monogram and make it your's!