This is a comfortable mask that I can wear all day without the ear loops bothering me. This one fits closely enough to my face so I don’t get much fogging on my glasses, unlike most masks. However, it is a single layer mask, so doesn’t meet CDC guidelines. Also, I can’t get enough oxygen through the mask for aerobic exercise and because it fits well it doesn’t leak much, so unlike other masks I’m actually breathing through the material instead of around it. This is my second batch - they tend to stretch out over time if you use them a lot and no longer fit properly, but I like them enough to keep ordering.