The Meike BG-housing material rather something is indeed subjectively "flexible", but this does not detract from the Fkunktion. The check mark appears to be of a different plastic - how durable they are, it will turn out at times. In any case, in my view, the favorable Meike BG-definitely recommendable, since the much more expensive Nikon-original-BG the quality requirements set by me to him was absolutely no justice - especially in its price !!!