The glasses fogging thing..

is a pain in the keyster.. next time I hafta don a bandana, if I put on shades or readers, I'm gonna spray them with mask defog - the stuff we spray in our masks to keep them from defogging during diving.. I realize most people don't have that handy, so a LOT of people we dive with use regular baby shampoo (easier on the eyes.) and make their own:

"Baby shampoo. A cheap and popular alternative to defog products is to dilute a few drops of baby shampoo in water and pour it into a spray bottle. Then use it the same way as commercial defog: spray it, swish it, rinse it. This method is becoming more and more popular, but it's important that you use baby shampoo."

Wha tit basically does is create a layer on the glass that doesn't allow "fog" or moisture to adhere to.. Never tried it with glasses, but technically it SHOULD work, but ya never know..

Good luck with the bandana design and let us know how it turns out..

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Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..