16oz Can Cooler are made of kitchen grade #304 Stainless Steel. Double walled Insulated Treated , so it could keep your tallboy can inside cold for hours till very last. The outer is treated with strong durable powder coating, not easy to detach. And most important that would be no fingerprint on when you hold. Fits for all US standard 16 Oz cans /Tall boys/Longnecks like beer, iced tea,energy beverage,etc. It's a competent travel companion. When you go outside, please remember to bring it.