This is a PITTA MASK made of polyurethane, ideal for pollen and cold prevention, and is a gray mask with 99% filter performance. - Product Name: PITTA MASK - Color: Gray - Quantity: 3 masks - Purpose: For pollen and colds - Material: Polyurethane - Filter Performance: 99% cut Thank you for viewing. I purchased this previously and stored it unused. I have opened the light gray one and stored it with one mask unused. I would appreciate it if you could understand that this has been stored at home.