Carrie Underwood, Meghan Markle, and Hailey Bieber Are All Obsessed with These Workout Sneakers

Carrie Underwood might primarily be known for making an impression on the stage, but she's an influencer in the fitness world, as well. Whether she's wracking up likes on exercise posts she shares with her 9 million Instagram followers or winning fans of her fitness wear line CALIA by Carrie Underwood, the entertainer and mom of two is passionate and vocal about her active lifestyle.

Given Underwood's unwavering commitment to staying strong and healthy, we take note when she shares her fitness must-haves. While catching up with Shape during her "Cry Pretty" tour, the singer shared the workout sneaker she always has on her feet: The Adidas Ultraboost (Buy it, $110+, amazon.com)

"I bought them on Amazon because I buy everything on Amazon," says Underwood.

"I have knee problems, and I've been looking for shoes for years that don't make my knees hurt. I have one knee in particular that just doesn't cooperate, and I feel like it matters so much how you walk and what your stride is like and what workout you're doing—but for my knees, these are the most comfortable shoes."

Turns out, Underwood is far from the only celeb fan of the sneaker. Meghan Markle, aka the Duchess of Sussex, was spotted wearing them in February 2019 as she flew from New York City to London following her stateside baby shower, and Hailey Bieber was spied rocking the Adidas Ultraboost 19 (Buy It, $180, zappos.com), an updated design from the line, earlier this year.

The running shoe, which debuted in January 2015, is available in both men's and women's styles and a wide variety of colorways and pattern options. Created for "long runs on city streets," the Ultraboost design features "energy-returning cushioning" and "a breathable Adidas Primeknit upper" that's meant to offer a flexible-yet-supportive fit, plus ventilation in key sweat zones—particularly helpful when you're running on a hot summer day or on vacation in a sweaty destination.

Earning 4.7 stars on Adidas' website, the style gets rave reviews from customers who say the style is "crazy comfortable," "great to train in," "spot-on style," and "feels like you're walking on clouds." Um, sold.

Grab your own pair, priced at $180 on adidas.com and zappos.com, and starting at $110 on Amazon.