Tervis, the maker of insulated drinkware products with a lifetime guarantee, is now offering a 15% discount to verified military members.

All you have to do is click here to take advantage of it.

It makes sense.

The company began in Detroit in 1946, when two Americans took the last three letters of both their last names and combined them (Cotter and Davis) to come up with the name, Tervis. Being the engineers that they were, they designed a pioneering insulated product that was bought a decade later by an entrepreneurial family, from Florida.

It’s been Made in the USA ever since and throughout. They now employ over 700 people, and even have licensed partnerships with the Air Force, the Coast Guard, the Marines and the Navy, too.

With that flag-waving spirit, they offer tumblers in all kinds of sizes, water bottles, sippy cups. Wine glasses. And not only do they come in thousands of looks (and these bright patriotic designs) they’re made for life.