Signature Tumblers 6pc Reusable Thick-Wall Straws, Assorted Genuine Signature made in USA extra-tough drink straws, fit Tervis, Signature and other tumblers 1.0mm-thick polycarbonate won't collapse under pressure (think REALLY thick malts) Made to be used over and over - better for environment than disposable straws Genuine Signature made in USA extra-tough drink straws, fit Tervis, Signature and other tumblers 1.0mm-thick polycarbonate won't collapse under pressure (think REALLY thick malts)