20buying it
The Traveling Merchant is the only way in, and he brings a random handful of his catalog each time. He shows up in the morning, leaves at dusk, and there is no trick that forces this outfit into his rotation.
Check his shelf on every visit and take all three parts in one go when they appear. Nothing guarantees he returns with them, and a half bought outfit sitting in a chest is worse than the coins.
wearing it
Hood, hoodie and pants, all of it social slot only with no defense attached.
The appeal is that it looks like plain street clothes, which is unusual in a game where most outfits are armor or a joke. Re-Logic put it in for Redigit and Cenx's son, and it is dressed the way a kid actually dresses.