I've owned both the RubberB straps and the Everest straps, and I feel like the Everest straps conform to my wide flat wrist better then the rubberb, which tend to squeeze the side of my wrists and prop the watch up above my wrist. I sold my RubberB with blue stripe and I'm happy with my blue and my black Everest straps - very good quality and feel.
I like that I can use them on my Rolex GMT II BLNR and also on my Omega Speedmaster X-33 Solar Impulse. I need to try it out on others as well, and maybe I can use the black one on my SMPc, or Planet Ocean 2500 or Speedy Pro if they fit.
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