Hmm there's another gray color: https://www.amazon.com/dp/B09F3D745N?ref=ppx_pop_mob_ap_share&th=1&psc=1

Slightly lower % coolmax (50% Coolmax,46% Nylon,4% Lycra) vs the pair you linked but has more mesh near the ankle it seems

53% Coolmax, 44%Nylon, 3%Lycra

Did you get that Grey-a10# color?

The black pair is actually 33% coolmax and 63% nylon.

I'm guessing more nylon = more durable but less breathable

Also debating if I should size up on my Darn Toughs to accommodate them underneath.