- Adult O/S (one-size)
- 100% natural fabrics (First layer in mulberry silk and the second layer in premium cotton)
- Made with 2 layers, a filter pocket and a nose wire
- Adjustable straps with ear loop
- Washable / reusable / reversible / unisex / universal size
- Sold without box
- Comes with a certificate of authenticity
10% of the profits are given to raise awareness about mental health issues