Yet I do not have big arms. The solution I found is to place it on the forearm with the position of the headset to the hand. So I passed my headphones from the bottom of my shirt.
A solution that finally suits me better, so I can access my phone more easily to change music or other.
In terms of quality of the product itself no complaints yet. The texture is not unpleasant on the skin and is well in place despite perspiration.
Slight disappointment but soon filled by the diversion.