A shiny $50 tumbler has entered the world of trendy water bottles. Meet Frank Green.

An assortment of Frank Green water bottles.

Frank Green If there's one thing American shoppers love, it's reusable water bottles in fun colors and prints.

Frank Green, an Australian drinkware brand, is now catching the attention of US shoppers.

The brand's shiny bottles are starting to stand out in a sea of Stanley cups and Owalas.

This summer, Morgan Symone was ready to break up with Stanley.

Then Frank Green came along.

We're talking, of course, about water bottle brands .

"I had a Stanley for a while, but she was always leaking, and I'm not a person who will put a charm [cover] on the straw," Symone, a 27-year-old from Los Angeles, told Business Insider.

"I wanted to pivot to something new and fresh." The recent master's graduate and marketing professional started researching and found the Australian company Frank Green online.

She was so intrigued by the brand that she told her friend about it at lunch the next day.

A few weeks later, a personalized, green-and-pink Frank Green bottle arrived on Symone's doorstep — a gift from her friend.

"I don't go anywhere without it," Symone said.

"I bring it with me in my car, at work, in my bag, to the beach, to the gym; I love it." The cup has become both a practical tool and a fashion accessory for Symone and other fans.

And while it's popular, it's not so trendy that you have to fight a crowd to get one — at least, not yet.