This Libbey 9 Ounce Hi-Ball glass has been treated with Libbey's patented DuraTuff thermal after process for "pressed" tumblers which gives the top portion of the glass maximum resistance to thermal and mechanical shock. When you see the embossed DuraTuff name on your product it means you're getting the longest service life in the foodservice industry.<>Model #: 15585<>DuraTuff® Treated<>Use Traex rack TR-12H with this Restaurant Basics DuraTuff Hi-Ball Glass"