Our SevenSeven Technology Here's a quick look at the technology that goes in to making this pure titanium tumbler so amazing: ● 　Two extra-thin layers of pure titanium The seams and edges of this tumbler are so smooth and precise, you'd swear it was just solid titanium, but in fact we carefully layer two thin sheets of pure titanium, for lightness and thermal insulation. Previous metal tumblers on the market have been heavy, and sometimes uncomfortable to hold or drink from, but this pure titanium tumbler has been precision-crafted for a perfect feel in the hand and pure drinking pleasure. ●　There's no slip 'twixt cup and lip To craft a perfectly-thin drinking edge requires a high level of technological skill, and at SevenSeven, our long experience has given us the ability to create an edge you won't find anywhere else. One sip from this tumbler and you'll never want to drink from any other glass again! ●　 That's not all! We're proud to announce our new series of titanium tableware: we're adding new items to the series day by day. These series are also available in two different finishes: mirror-polished or satin-finished, with added options of recrystallization or laser engraving if desired. Contact us today! © Copyright 2007 SevenSeven Co.,Ltd. All Rights Reserved.