7 of 8 people found the following review helpful
This review is from: GoPro Anti-Fog Inserts (Electronics)
These little inserts (about the size of a fingernail but thicker) are highly effective keeping your camera housing fog free either in water warmer or cooler than the ambient air temperature. One of these at a time is enough for a Go Pro; I have also used the same inserts for a larger (point-and-shoot digital) still camera inside a waterproof housing with the same tremendous results - I just used two of them. I would say that, while the product looks expensive, when you've seen the results compared with not using them you'll likely be convinced that it's a worthwhile expense - especially when you consider that these tabs can be re-used. A few minutes in the oven rejuvenates the inserts allowing them to be redeployed with the same results (this is not just a user tip but the manufacturer's own recommendation).