Thank you for viewing! This is a set of 3 thin cotton fabric 3D masks (^^) Size (when folded in half) Length: 12.5 cm Width: 11 cm The lining uses medical-grade cotton fabric sold at drugstores. The elastic is threaded through, so please adjust the length and tie it to fit. (^^) If it wrinkles after washing, we recommend ironing. You can use it for a long time and keep it looking nice. These are handmade, so there may be some imperfections, but we appreciate your understanding. m(_ _)m We also offer a discount for multiple purchases, so please feel free to comment.