Revision Military Bullet Ant Tactical Goggles - ANSI Z87.1 Certified Protective Eyewear for Shooting, Hunting & Outdoor Activities | Durable Anti-Fog Lens for Tactical & Safety Use

Purchased for motorcycle riding, they fit snug with a rubber outline so it seals around the eyes blocking dust and wind, theirs vents on the bottom and top. When wearing a mask they don't fog. I'm using my prescription inserts i had from the army when i was an mp. They function well and can be used for shooting, and military function (which is their main role) but none of that for me anymore. Great goggles, love them.The lenses are rather difficult to switch in and out.The lenses fog up, even after removing the foam to let airflow in. They also scratch easily with just about any cloth.(NOTE: This review was originally written for the prescription inserts, but Amazon no longer lists those separately.)I practice karate & got tired of having my glasses knocked off. I wanted something functional that didn't look dorky. I did a fair amount of research & decided on the Bullet Ant goggles.The goggles are actually pretty cool. They're good looking and they don't block your peripheral vision (on the sides anyway, down is another matter: think kicks.) If you get smacked upside the head, the padding distributes the blow well; and of course they stay on instead of flying across the dojo. They'll fit under or over your headgear just fine. All well and good.The only complaint I have about the goggles themselves is that there isn't much ventilation - leading them to fog up. There's some foam mesh covering the vents, if you remove it that will alleviate the ventilation problem to some degree, but won't fix it entirely.But their solution for prescriptions is rather poor. It's designed as an insert that hangs inside the goggles, suspended from a clip that points *down.* It's very easy for a stray blow to dislodge it, once I got smacked hard enough to knock the lens out of the insert itself!With the insert inside the poorly-ventilated goggles, you now have three surfaces to fog up, instead of just one. And boy howdy, do they ever fog up. I will say that my *opponents* seem to like sparring with a blind man but it doesn't work for me, y'know? %^PSo, okay, they're good looking goggles with some nice features - but the prescription version is just not for contact sports, or any sport where you're sweating a lot or getting jostled a lot or . . . ?== UPDATE ==I eventually bought a run-of-the-mill pair of sport goggles to use in the dojo, but the Bullet Ants do work well for motorcycle riding (and they compliment my biker-wannabe look rather nicely. ;-)Bought this because I was tired of the performance of knockoff Revision goggles. The difference is night and day. With knockoff ones, they would fog up all the time. No such issues with these.They are quite comfortable to wear all day at games.Only complaint I would have is that the latches that hold the straps at a certain length like to pop open when I accidentally bump them if I'm taking my helmet on or off. But they stay closed during games which is all that matters.Great product. They fit very well however they did fog up a bit. That being said I think I just have to modify the position of my face mask a bit and that should take care of the fogging problem.