Deodorizing and antibacterial free-size Delica cap. - Product Name: Delica Cap - Size: Free - Features: Deodorizing effect, antibacterial, antistatic - Strengths: Excellent absorbency Thank you for viewing. I purchased this at a nearby Workman store 2-3 years ago. It is unopened. In the first photo, there is a black thread about 1-2mm long mixed in, but it will probably come off when opened. Because it has elastic, it should fit most people. I bought two of these at the time, and I'm selling this one because I haven't used it. For reference, my head circumference is about 60cm, and it fits. As you can see in the photos, my ears barely fit. Some people may not be able to fit their ears in. How about this for those who work in a kitchen?