Why do you still go back tomorrow at Amazon: The attachment to the camera.
The bag is simply "attached" only from below. When fixing is indeed provided two tabs at the neck-strap to fix around, so the bag can not slip down, but I do not want to use this loop. A maximum of one wrist strap, because I feel that for Mirrorless cameras due to the low weight rather disturbing.
Thus, "pinched" the bag just to my camera, is very fast and easy to fall down before the heat of the moment.
But for those who want to use the included shoulder strap anyway, this bag is recommended without hesitation.