Here's What Went Down With Stakt Folding Exercise Mat After Shark Tank

Besties Millie Blumka and Taylor Borenstein hoped to hook a shark during Season 14 of "Shark Tank" with their improved yoga mats. The pair came up with the idea for Stakt yoga mats during the pandemic, when they realized there was a gap in the market for mats that were conducive to "diverse workouts" according to the brand's website. 

The mat features a folding design that can be used to do a variety of workouts including yoga, strength training, and Pilates, where investing in a good mat is key. "When moving between an exercise where a standard mat is sufficient — such as ab work — to an elbow plank where more cushion is necessary, the mat quickly converts to support both and is at the ready for the next pose or exercise whatever that might be," Blumka told Athletech News. The mat can also be used for incline and decline exercises, among other things, Borenstein added.

In addition to being a one-stop shop for various exercises, the foldable design is also good for portability and small spaces. The Stakt Mat, which retails for $88, is made from durable EVA foam, water-resistant materials, and is non-slip.

When Millie Blumka and Taylor Borenstein appeared on Season 14 of "Shark Tank," they asked for $100,000 for 10% equity in Stakt. They told the sharks that they hoped a deal would help scale their business, establish their brand and boost marketing, as they mainly relied on organic social media marketing. The pair added that the mat only cost $21.50 to produce, and in six and a half months, they had been able to generate $110,000 after investing a combined $50,000 of their savings.

Daymond John dropped out after admitting he didn't understand the market and Kevin O'Leary said it wouldn't be a good fit for him. Mark Cuban said it conflicted with another fitness equipment company he already invested in — Cuban has invested in at least one fitness equipment company on Shark Tank, Bala Bangles.

Kendra Scott was concerned about repurchasing, saying yoga mats are usually long-term investments. It was Lori Greiner who secured a deal with Blumka and Borenstein at $100,000 for 15% equity and $0.75 royalty. 

Unfortunately, following their appearance on "Shark Tank," the deal that Blumka and Borenstein secured with Lori Greiner didn't end up closing. But that didn't stop Stackt from stacking up its customer base. 

Almost exactly one year after Stakt debuted on "Shark Tank," the mat was named one of the best inventions of 2023 by Time. In 2024, it was named one of the best yoga mats of the year by Good Housekeeping, an accolade also given to the mat in 2025 by Yahoo Life — the products that made that list were tested and approved by a personal trainer. 

Blumka and Borenstein are pretty active on social media, with about 33,000 followers on Instagram. They often post giveaways, sponsorships, collabs and fitness challenges. In 2024, Stakt partnered with yoga studios across the country, began selling mats at boutiques like Free People and fitness stores like Lagree, and even collaborated with Cafe Panna to create its own ice cream, according to one Instagram post. So, it's clear that Stackt continues to grow.

Stackt founders Millie Blumka and Taylor Borenstein have been busy, with the success of their brand landing them dozens of new sponsorships. In 2025, the pair partnered with energy drink brand Gorgie, sharing photos of women using their Stackt mats with the drink in hand. 

In January 2025, they also partnered with photographer Gray Malin to create their first ever printed mat. Malin is known for his bright photos that feature landscapes including beaches. So, it was no surprise that the printed Stackt mat featured a sandy white beach on one side and bright blue water on the other side. Blumka and Borenstein noted in a January Instagram post that they are donating a portion of the proceeds from this mat to the California Fire Foundation, which "supports firefighters and their families."

As of 2025, the company offers a variety of products, including a carrying case, branded cleaner, grippy socks, branded hats, towels and the Stakt weight, which allows users to adjust between two, four and six pounds, and retails for $98. Just make sure to protect your back when you lift!