For the TG 820 I ordered this bag. First of the unfavorable: the armband for me is not available, I am a woman and that was more athletic arms. Nevertheless, the extent of the upper arm appears too small in combination with the weight of the TG 820. I do not know how severe the other cameras for this bag is designed. But I also do not need anything to have dangling arm ;-)
On the belt bag is perfect! Even the carabiner with the cable has proven to be quite useful - if the camera sometimes slips out of your hand or in city tours from thieves (I hope).
Incidentally, the bag fits exactly the camera is likely to be no greater than a millimeter.