Sorry but when you post a topic on an airsoft forum about how to protect your self from welts then your painting yourself as a target.As people have said welts are just part of the game. One of the biggest problems with hit taking is people padding up to much so they dont feel it.
No ones seriously saying just wear a t-shirt thats for stupid people and was a joke. Cover all bare skin and wear a PC if you are worried, that will prevent a lot. Anything that you get after that is unavoidable it is after all a contact sport/game.
If your worried about getting sweat into cuts though I honestly would say toughen up a bit it wont kill you. I go to work and get grease, dirt and all sorts of chemicals into the the open cuts and welts on my arms and havent died yet or given it a second thought.
Youth of today really needs to toughen up and now you have made me sound old 😠