I'm getting some mixed advice on harness size...hoping to go with small due to low profile, but anyone have experience with a FHF Bino Pro M with Vortex 10x42 Diamondbacks?
Can’t speak to the Diamondbacks, but I have 2 Binos that are similar height according to specs (SLC 10x42 and Maven B1.2 8x42) that are both in FHF pro-m small. The diamondbacks, SLCs and B1.2s are all listed at 5.7. Im pretty sure youd be fine with a small. I will say that youll need to give it a few weeks for the FHF to break in form around the binos. If its a little snug at first, give it some time and itll free up.