Elastane (Lycra) is often used as a crutch. High-stretch fabrics make it easier for manufacturers to fit a wide range of body types using simple patterns. The elastic provides the versatility, and your body does the work of shaping the garment. But the real problem is that elastane is very hydrophilic – meaning it gets wet easily, stays wet (and heavy, and cold) for a long time, and reduces breathability and comfort.
7mesh does extensive work to their patterns so garments fit properly in the riding position, minimizing the need for elastane. The S2S Jersey uses two main fabrics. A 4-way stretch woven nylon front panel (with limited elastane) provides excellent durability and creates a light buffer between you and the wind. The Omega knit polyester back panel is constructed with mechanically textured yarns that provide stretch without elastane. This fabric rapidly transfers moisture away from the body during hard efforts.