A rejuvenating, travel-ready eye mask infused with binchotan charcoal The Binchotan Charcoal Eye Mask helps mitigate the effects of fatigue by easing tension and pressure around the eyes and employing the benefits of activated charcoal. Use daily for relaxation, meditation, stress relief, airplane travel, or a good night's sleep. Please note that this eye mask does not block 100% of the surrounding light. Materials: Front: Polyester Back: Organic cotton, binchotan charcoal Filler, edge: Polyurethane Dimensions: 7" L x 3 ½" W Care: Wipe with a damp cloth as needed. Can be soaked in lukewarm water for only a few minutes. Avoid rubbing the mask to avoid deterioration of the material. Made in: Wakayama, Japan