Meet the lightweight and durable Crowbar interchangeable-lens sunglass from ESS. Featuring a frameless bottom lens design and innovative Lens Gate that makes lens exchanges quicker and field of view greater than ever. The military-grade polycarbonate lens material delivers crisp optics, plus a broad range of ballistic protection. A light and balanced fit that won't interfere with hats, helmets, hearing pro or comms gear makes the Crowbar possibly the most versatile ESS sunglass ever created. Small-to-Medium Fit.