The waterproof housing used with the GoPro HERO cameras does an excellent job of sealing out the elements, but sometimes it works a little too well at sealing damp air in!
If you have ever put your HERO cam in the housing on a foggy summer morning, you have probably ended up with a fogged lens later in the day. These dessicant inserts fit inside the HERO camera housing to absorb moisture before it has a chance to condense on the lens or inside the camera. The inserts can be used 4 or 5 times before drying is needed. Just pop them in the oven for 3 minutes, and they're ready to go again!
Each set includes 3 sets of 2 inserts (2 inserts are used at a time).
Not for use with open "skeleton" case.