Athleisure is still driving clothing sales

This holiday shopping season, expect to see even more “athleisure” on the racks, and from more brands that you wouldn’t necessarily associate with that category.

The term, a portmanteau of “athletic” and “leisure,” now refers to a lot more than just gym gear that you can wear all day. It encompasses sneakers, outerwear, and even men’s dress shirts and blazers.

“We’re starting to see more and more performance fabrics entering into what I would call classic apparel,” says Matt Powell, a retail analyst with NPD Group. “It’s a different mentality than gym wear. The cadence is different, the colors and design are different. So you can buy a dress shirt today, or even a suit, that has stretch or is anti-microbial. That is a performance characteristic we typically see in activewear. Yoga tights that look more like pants. The world is really blending here.”

NPD Group calls the category “casual sportswear,” and pegs the space at $44 billion in annual sales. Most of the brands making athleisure products avoid using the actual term “athleisure,” but they all know its importance.

In the third quarter of this year, NPD Group says, activewear sales were up 3%. That’s not the same growth as in 2015, but Powell says, “When we compare it to non-active apparel categories — dresses, jeans, etc. — those sales are much worse. My sense is that activewear as sportswear continues to be an important trend.” General fashion apparel still does more in sales, but athleisure is trending better.

The space has grown overcrowded. There’s Lululemon, sometimes credited with popularizing the category. Athleta, which sold to The Gap in 2008, is still thriving. Nike and Adidas make athleisure, and Adidas has done particularly well in the category with retro apparel and sneakers, and partnerships with Kanye West and Stella McCartney.

Puma partnered with Rihanna starting in 2014 on the “Puma x Fenty” line, and Vogue wrote that Rihanna’s “oversize motocross-inspired nylon track pants and anoraks were a nice way to push the athleisure trend out of its current spandex comfort zone.”

Powell has told Yahoo Finance that Rihanna is the only recent example he can think of where a celebrity endorser directly boosted a brand’s sales. Puma’s Fenty Creeper sneaker with Rihanna was the 2016 Footwear News “Shoe of the Year.”

And now even Amazon is selling its own athleisure apparel.

The business is so crowded now that, even though demand is still high, supply is too high, and only the best offerings will succeed.

“Supply is excessive and demand is not quite what it once was,” Neil Saunders of GlobalData Retail told CNBC in July. As a result, “Pioneers and innovative retailers like Lululemon continue to do well, even if the edge has come off growth,” but new players will have a tough time.