This intricately woven eye mask made with 100% grade A Xuiyan jade. Natural Jade Sleep Mask & Blindfold, Eye Mask, Anti-Aging Hot or Cold Therapy Eye Mask Which is Soothing Cooling Detoxifying (Xiuyan Jade) Empresses in China have used jade masks for thousands of years. The stone is naturally cool to the touch. But, putting the mask in the fridge before use will make it an extra nice treat. The ZAQ Jade Mask can also be used warm by simply soaking it in hot water for a few minutes. Make sure the mask is dry and not too hot for the skin before laying over the face. Whether hot or cool, feel the tensions fall away, lines soften and soul rejuvenated. Helps relieve sinus issues, closes pores and reduces puffiness and wrinkles. Stone size and color may vary due to handmade nature.