I opened and stored this item. I used it once, but it didn't suit me, so I'm selling it. The following is a quote from the product description: [Product Information] The BAKUNE EYE-MASK is a high-quality eye mask by TENTIAL. It is unisex and features a black color in size F. [Technical Features] It uses SELFFLAME™ technology, providing a comfortable feel. It firmly supports the eye area and promotes relaxed sleep. [Usage Scenarios] It is ideal for use while traveling or in daily life and is convenient to carry. It is an essential item for creating a comfortable sleep environment. - Brand: TENTIAL - Product Name: BAKUNE EYE-MASK - Size: F - Color: Black - Features: Uses SELFFLAME™ technology - Price: ¥4,400 I do not have any pets, and I do not smoke. Please understand that this item has been stored at home. Thank you for looking.