A few days ago I managed to get hold of a few GoPro bits and bobs that aren’t that widely available yet. The GoPro Caps & Door Pack was one of them. I also ordered a battery and this GoPro Bag Pack.
The pack consists of five drawstring bags. They are very well made but are not anything special. I think they will provide great storage for mounts etc but no better than a sil-nylon stuff sack.
The bags will fit a GoPro with a floaty back door. So could be a way of helping to protect the camera in your bag.