Britney Spears' Weird Workout Gear Explained: It's a Sauna Suit, Causes "Profuse Sweating"

"It's like cooking in your own juices," Shape House owner tells E! News of weight loss/detoxing product

By Katie Rhames, Rebecca Macatee Mar 13, 2014 12:48 PMTags
Britney Spears, WorkoutBeetham/Raishbrook/Splash News

Britney Spears isn't heading into space, y'all—that's just her workout attire!

The fit mom of two was snapped wearing a silver sauna suit Wednesday in Calabasas, Calif., and that silver metallic top doesn't just look kinda cool, it also claims to help accelerate weight loss.

Shape House is an L.A. spa that allows clients to sweat out their toxins with some extra help from a sauna suit similar to the one Britney was wearing. "The suit just does more of the same thing you would get without it—only much more so" owner Sophie Chiche told E! News. It accelerates "super profuse sweating," she said, "as much as three times [as much as without the suit], which goes directly to [a] more efficient detox."

"The hyper sweatsuit retains the heat closer to your body, and because of the trapped moisture everything feels more steamy," added the Shape House owner. "It's like cooking in your own juices."

Well, whatever this sauna suit does seems to be working for Brit! She also stays in shape thanks to her dance-filled "Britney: Peace of Me" show at Las Vegas' Planet Hollywood Resort & Casino. She also gets her fitness in chasing around sons Jayden, 7, and Sean, 8.

To get ready for the kickoff of her Vegas residency in December, the 32-year-old singer did "Olympic-style training," her trainer Tony Martinez told E! News. The princess of pop engaged  in "hard-core stuff," particularly "intense, interval training to keep her heart rate up."

"She's so excited to perform and show what great shape she is in," her trainer gushed before the show's kickoff. "She is working so hard. It is paying off."

Watch: Britney Spears' Fashion Flashback