Charcoal shading goggles good ventilation and sweat absorption and is a natural material. Carbon particles at high temperature infrared treatment may relieve eye wear mentally and vascular pressure to better blood circulation. To eliminate fatigue computer users car owners students the elderly or the pressure of the office workers lunch break night sleep or car travel used to help to help eye care. - Material: charcoal + cotton + mesh cloth - Ideal for travel use reduce pressure promote blood circulation - Help you relieved to go to sleep - Color may vary: Black + grey / Black