The chest strap is also suitable for slightly larger chest circumferences and a constricted not equal even so, can be adjusted towards more particularly in all directions (I also have the original GoPro - that here is this in every way). The suction cup holder holds bombproof on glass or other smooth surfaces. And the head strap is rubberized interior that it does not slip.
Small downer in retrospect: It is absent in the "old" version of the set of the foot to be snapped in the chest, or on the suction cup tripod. Basically this is not a defect, because as an accompanying the GoPro basic equipment at least once. (Usually also a top on the package) But who no longer has left that was "new version" select (especially the strangely enough at the time even 1 euro cheaper :-)
Nevertheless - TOP SET at very good price.