Here in the team we all have our different clothes but they are all for outdoor/wood caching, since we prefer those.
We all have:
Cargo pants, the pockets are very useful.
Hiking boots, because without them there's no use in going out in the first place.
A long sleeve shirt with a t-shirt under it, sometimes it's better because of the cold.
A pair of gloves, you never know where are you going to put your hand.
Sunglasses, to protect your eyes against the sun or for style purposes only like some
Then we all have our personal touches like small bracelets, watches, scarfs, hats you name it.
Also have a backpack, it's importance is beyond huge and the first time we went without it was a bad day