Pros: Very effective
Cons: Strap a bit short
I am very nearsighted and am pretty lost without my glasses. I don't want to invest in prescription goggles since I'd still have to carry my glasses, and I've never worn contacts. I tend to overheat easily, even when lightly dressed, and my glasses are constantly fogged in conventional goggles.
These goggles are the best solution to my foggy problems! The 2-speed fan keeps everything clear except under the steamiest conditions. This is my second pair of this type of goggle, and they have made significant improvements. Where the small motor once required 2 AAA batteries now it only takes one, and the new OTG (Over The Glasses) fit is much more comfortable. The goggles no longer tend to pull my glasses off when I remove them, and don't press my glasses into my face. I always carry a spare battery but I find one battery lasts for several days (I'm not sure exactly how long since I always change the battery before it dies). The instructions say to run the fan on the lower setting, only turning it to high for a brief period when needed, but I've left it on high for hours and so far -- over a year's use -- no problems. I've been using only the Sensor Mirror Lens that they came with, and find it gives plenty of contrast in low or flat light, even in Montana fog.The Sensor transmits 70% of light, so I've just ordered an Ignitor Mirror Lens which transmits only 35%, to try on brighter days. There are several other lens types available, the darkest transmitting about 7%.
I find I do have to take care to keep the rim of my helmet from resting on the top of the goggle frame, so the small fan has clearance to move air, but that has become second nature. I have a Giro helmet, maybe this is not a problem with Smith helmets?
My only complaint is the strap seems just a bit tight when stretched over my Giro helmet -- I'm afraid one day it may be strained a bit too much and break -- but so far it's okay. That said, these do seem to be quite sturdy overall. I did a surprise faceplant in icy conditions last week -- came down hard enough to make my lips swell like I'd been punched in the mouth. The goggles were knocked slightly askew and my glasses came partly off inside them. Inspecting the goggles later I saw no damage at all, so it seems they can take a little punishment!
I highly recommend these to all eyeglass wearers!