one pair for every day of the week
Throw a pair of CoolMax socks like the Capo FX R6 into your washer, and behold upon pulling them out that they're already dry. This speaks volumes about how lightweight and breathable they are - inherently staying dry while locked in your shoe for a daylong ride as well. The synthetic fibers are impressively durable as well, and hold up to prolonged uses and washes. I only wear CoolMax socks anymore.