Review on Dulzod Reusable Outdoor Sport Face Mask with Activated Carbon Filter - Dustproof Respirator for Anti Cold, Bike Riding and More by James Small

If, like me, you are new to using and installing this type of device, you will be annoyed within seconds of opening the box. Reasons: 1. There is no user manual.2. Don't know in which direction the filter sits.3. Poorly fitting assembly parts. When you finally got everything figured out and put together; You learn that the seller MUST describe the item as a device not recommended for men with beards. And that there is no - I repeat, [NO] universal size; because it fits me tight and I don't have a big face THIS IS FOR A SMALL PERSON - IF YOU WANT A COMFORTABLE FIT!