The Valken Zulu slim fit airsoft goggle is a low profile pair of airsoft glasses with thermal lenses that provides the ultimate anti-fog performance that is designed for slimmer faces. The Zulu goggles dual pane lenses provides the ultimate anti-fog performance by isolating the temperature difference inside and outside of this eyewear. The Zulu Goggles' thermal system provides anti-fog protection in the worst weather conditions, or extreme-temperature working environments. The scratch resistant polycarbonate lens also provides 99.9% UVA/B/C protection, and the frame features a vented foam carriage that provides maximum dust protection, as well as a sufficient airflow outlet for heat. We also recommend using these goggles in combination with either the Valken Kilo Mesh Mask, or the Valken Tango Mesh Mask for overall safety and protection.