Thank you for viewing. This is a great product that finishes simply by sewing it in place. It has a crisp fold, is easier to handle than bias tape, and makes edge finishing easy. It conforms flexibly, making corner sewing simple. Material: Acrylic Width: 14mm (finished width 7mm) 3m This is a new, unused item, but it has been stored for a long time, so there may be some age-related discoloration. We appreciate your understanding and purchase.