I've got two Heroic 18s from watchobession at Hirsch, Omega, Deep Blue Watches and Watch Straps. These retail 120-130 each. The navy is barely worn. The brown saw a bit more use. The blue comes with it's box and pouch. These are 130/80 with the brown being slightly shorter. 24 mm wide. Approx 5 m thick. 40 mm buckle.
The buckle on the blue is great shape. The brown shows some very small marks.
These are heavy and nice. Look great on big watches with big lugs. Like to sell them as pair at $135 shipped. Or $65 brown and $85 blue shipped. Paypal pref. New $260 + tax + ship. Good opportunity for a pair of premium straps.