This is one of the dilemmas faced by every (not only) novice traveler. Seemingly ridiculous, but it still exists and affects everyone who should optimize their luggage. So how much?
I have a simple rule:
one pair on legs, the other dirty, the third dries, the fourth to sleep, the fifth and sixth free in a bag.
That’s right … I always have six pairs. It is enough for me. Even during the longest journeys.