# One-Piece Runner Outfits The Lululemon Running Onesie Keeps You Cool (Looking) While On a Run By Alyson Wyers | Published 2014-07-03 | Lifestyle Source: Trend Hunter, https://www.trendhunter.com/trends/lululemon-running-onesie References: [fittish.deadspin](http://fittish.deadspin.com/lululemon-triumphs-in-creating-ugliest-running-outfit-e-1599163696) & [shop.lululemon](http://shop.lululemon.com/products/clothes-accessories/shorts-run/The-Runsie?cc=14692&skuId=3549204&catId=shorts-run) Given the popularity of [adult onesies](https://www.trendhunter.com/trends/yitty-3), it was only a matter of time before someone tried to exercise in one, similar to the new [Lululemon](https://www.trendhunter.com/trends/womens-running-shoe) running onesie. Whether anyone saw the 'runsie' coming is difficult to say, but it will definitely have people talking. While a [sports bra](https://www.trendhunter.com/trends/temperature-regulating-sports-bra) is sold separately, this one-piece running outfit means you don't have to worry about matching your athletic gear (if that was a concern you had to begin with). Made to keep the wearer cool while going for a run outdoors, the Lululemon running onesie features a cut-out back design as well as handy pockets to store essentials plus a secret one for keys. The athletic romper is also made out of breathable material that 'sweat-wicking.' ## Trend Insights (Trend Hunter) - Score: 5.0/10 - Popularity: 79% | Activity: 63% | Freshness: 8% - Audience gender: 10% men, 90% women - Primary generations: Gen Z, Millennial - Top markets: North America ## Categories [Trend Hunter](https://www.trendhunter.com/trends) > [Lifestyle](https://www.trendhunter.com/lifestyle) > [Sports](https://www.trendhunter.com/sports) ## Key Themes ### Key Themes Behind This Trend - **Adult Onesie Exercise:** The trend of adult onesies being used for exercise opens up opportunities for innovative active wear designs that combine comfort and style. - **One-piece Running Outfits:** The introduction of the Lululemon running onesie highlights the potential for one-piece running outfits as a convenient and fashionable option for athletes. - **Cut-out Back Designs:** The cut-out back design featured in the Lululemon running onesie points towards a trend in active wear that focuses on ventilation and breathability for enhanced performance. ### Where This Applies - **Athletic Apparel:** The athletic apparel industry can explore the development of innovative and stylish one-piece running outfits to cater to the growing demand for convenient and fashionable workout attire. - **Fashion Retail:** Fashion retailers can tap into the trend of adult onesie exercise by creating a range of exercise-friendly onesies that combine comfort, style, and functionality. - **Sportswear Technology:** The introduction of cut-out back designs in the Lululemon running onesie presents an opportunity for sportswear technology companies to develop advanced ventilation systems that enhance performance and comfort in active wear. ## Related on Trend Hunter - [Olympics-Inspired Running Shoes](https://www.trendhunter.com/trends/womens-running-shoe.md) - [Whimsical Activewear Collabs](https://www.trendhunter.com/trends/lululemon-x-disney.md) - [Activewear Lounge Ranges](https://www.trendhunter.com/trends/soft-motions-collection.md) - [Running Gear Clog Designs](https://www.trendhunter.com/trends/running-vest-clog.md) - [Low Light Running Headwear](https://www.trendhunter.com/trends/lumos-headband-by-on.md) - [Running Advent Calendars](https://www.trendhunter.com/trends/runners-advent-calendar.md) - [Cozy Heart Pocket Onesies](https://www.trendhunter.com/trends/yitty-3.md) - [Cartoon-Themed Performance Wear](https://www.trendhunter.com/trends/disney-x-lululemon.md) - [Earthy Athleisure Clothing Collections](https://www.trendhunter.com/trends/red-run-active.md)