I was looking for a bag for the GoPro Hero 3 and have decided for this because it receives the most necessary and offers a bit of protection. Depending on what you did so of accessories and want to take, the bag can also be too small. But for a basic configuration (cam in the housing, 2 batteries + 1 in the Cam, a pair of mounting brackets with screws, memory cards, cables Agen and display) it is OK. For more, so suction cup, etc. I would rather choose the large version. My conclusion: Even if the price is relatively high, but everything fits and I would buy it again.