Swaddling newborn

I bought 8 for my baby. As they may make mess on it. like eg. vomitting milk or leaked diaper. I on air con/fan so baby doesn't feel too hot. I put on a onesie and wrap baby. My swaddle is pretty thin, that is also why it's fine. As long as it's not too thick. Can use a thick swaddle at night if you on air con. Also depending on whether you buy traditional or modern swaddle. Traditional is those cloth swaddle and you wrap baby up. Modern is those zipped ones.