I have read that the latest reports regarding these covers and how they have went from being very good reliable to downright rubbish, I have a couple of sets that are years old and they have never failed and they get dogs abuse, my question is I now need a new set for a recent addition zeiss 7x50 ir I have heard the very latest models have changed the plastic to something more durable hopefully more like the old ones.

I have seen advertised a "multiflex model" with the eyepiece end having a yellow tab opener as opposed to the usual red does any one have any experience of these are they any better or just more rubbish ?