The resin straps also don't feel very nice on my wrist. I highly recommend a nato strap: https://natostrapco.com/collections/all-watch-straps/18mm

I believe any of the 18mm straps should work on the F-105w, but make sure to do your own due diligence.

edit: Make sure to check out this site for other kinds of nato-style straps: https://www.cheapestnatostraps.com/collections/paratrooper-s...