If you feel like you can't walk into a yoga or spin class — or even hit up your local Whole Foods — without seeing someone in Outdoor Voices' color-blocked leggings or itty-bitty crop top, you're not alone. The brand's taken hold of the activewear space over the last few years, and it's catchy "Doing Things" motto has become an Instagram caption go-to for practically every millennial wearing its signature matching set. But, there's another brand creeping into the scene that has the potential to snag the attention of even the most loyal OV fans (including myself).