This is a 30oz double wall stainless steel tumbler, branded with the Old Head logo, and featuring a specially designed tray that will suspend your 1 gram concentrate jars above ice and keep your carefully extracted terps chilled for hours while traveling, or even just around the house when you don't want to have to get up in the middle of a sesh to go get or switch out your terps. You can always of course just take the tray out and use it as a cup as well, it will also keep your drinks cold for hours!