Wish I knew where some of my OEM straps were. I would repurpose them on other bodies. I actually re-used the D850 strap for another camera. I like the op-techs since I can unclip the bulk of the strap. I have had the 2 TPF straps for a while now. And 2 other op-techs. I also have 2 more op-techs coming. Not a problem with any of them.