these fit great and for the most part are semi-anti fog, but can't beat it for the price. they fog a liittle only but pretty clear to see thru.

This anti fog mask really is anti fog.  My 13 year old grandson and my husband (grandpa) both used the mask and liked it.

This mask is more like a traditional diving or snorkeling mask but I use it for swimming for exercise as well (because it keeps water from getting into your nose). It's very good quality, comfortable, etc. but I wish someone would invent a mask that really doesn't leave rings around your eyes.

My primary reason for buying this mask was that I assumed they would reduce fogging.  They fog up within five minutes of my swim.  I am back to using anti-fog sprays.  The fit is fine, and the price is ok, but don't be fooled by the title that leads you to assume they will be less likely to fog up.

This was advertised as a mask for swimming.  It is a snorkeling
mask. I was very disappointed when i opened the package  to see that i had been tricked by false advertising.

I will never order from swim outlet again.