Hi, my name is Ryan Stinelson. One of the problems with GoPro cameras and any underwater camera for that matter is that occasionally what will happen is that some condensation will form on the lens that will pretty much ruin the shot or ruin the video. So even worse, what will happen is you'll go like I did about two or three weeks ago, you'll go kite surfing or you'll go paddle boarding or surfing or whatever it is that you're videoing and you'll think that you have an amazing video only to get back and find that none of the footage is useful. You can't use any of it because of the fact that there's some condensation or fog on the lens. So in order to avoid that from happening, the solution is these two little wafers that they sell at GoPro that are just really easy to insert right alongside inside the casing of for the camera inside the water system housing. So all you got to do is just literally they're totally removable, what you can see, they're like little pieces of cardboard and all you do is you put the camera inside and you literally just slide them right alongside the camera just like so. Close it back up again, you got one there and one on that side and you're good to go. It's a light, these are lifestyvers. I mean literally I don't put the camera in this casing without putting those in there with them because with the camera because I just don't, I've experienced the pain too many times to when I have a condensation on the lens and I just it's just not worth it. So I always put them in there. So if you have any questions, give me a call. I hope that helps and thank you.