How exactly is that supposed to work? Well, the Everlux fabric has a "unique yarn combination" that serves two different functions: the skin-side surface moves moisture away from the skin, while the outer layer spreads moisture across the surface to maximize evaporation, says Tom Waller, senior vice president of Whitespace, Lululemon's research and development center. In other words, it's two fabrics knitted as one. "[The fabric] allows us to have cool-to-the-touch yarns next to the skin and buttery soft, quick-drying yarns on the outside, ensuring that you feel cool, dry, and focused on your workout," Waller says. So, the Everlux fabric should dry faster and feel cooler than other leggings Lululemon makes, he says.