This eye mask is made with functional fabric incorporating the latest technology material, a mineral mixture made from several types of natural mineral stones. This technological material is characterized by its ability to affect blood flow upon contact with the human body, leading to improved circulation and an increase in body temperature. It has a wide design, approximately 32cm in width. By firmly enveloping the entire eye area, it enhances the warming and relaxation effects. Soft fabric is used on the part that touches the skin, providing a gentle feel. For the fatigue and aging of modern people, the blood circulation-promoting eye mask "gruria". Outer fabric: 100% polyester Lining: 84% cotton, 16% polyester (natural mineral stones, made in Japan) Belt: 100% polyester Velcro: 100% nylon [Item] Tokai Optical gruria Blood Circulation Promoting Eye Mask [Size] ・Width: 32cm ・Length: 15cm (Unisex) [Color] ・Outer fabric: Black ・Lining: White For the fatigue and aging of modern people, the blood circulation-promoting eye mask "gruria". Boosts immunity, reduces stress, relieves insomnia, aids fatigue recovery, and reduces eye strain. Just by wearing it, your skin, body, and even your brain will rejuvenate. This eye mask is made with functional fabric incorporating the latest technology material, a mineral mixture made from several types of natural mineral stones. This technological material is characterized by its ability to affect blood flow upon contact with the human body, leading to improved circulation and an increase in body temperature. It has a wide design, approximately 32cm in width. By firmly enveloping the entire eye area, it enhances the warming and relaxation effects. Soft fabric is used on the part that touches the skin, providing a gentle feel. For the fatigue and aging of modern people, the blood circulation-promoting eye mask "gruria". Outer fabric: 100% polyester Lining: 84% cotton, 16% polyester (natural mineral stones, made in Japan) Belt: 100% polyester Velcro: 100% nylon [Item] Tokai Optical gruria Blood Circulation Promoting Eye Mask [Size] ・Width: 32cm ・Length: 15cm (Unisex) [Color] ・Outer fabric: Black ・Lining: White For the fatigue and aging of modern people, the blood circulation-promoting eye mask "gruria". Boosts immunity, reduces stress, relieves insomnia, aids fatigue recovery, and reduces eye strain. Just by wearing it, your skin, body, and even your brain will rejuvenate.