Graeme- Hey man, how do you wear a long sleeve Shirt with slacks without having the back of the shirt puff up?
Terence Sambo- If the fit of the long sleeve Shirt you're wearing is not slim, it'll definately puff up. But there are ways to disguise the puffiness at the back. After tucking the shirt, pull it at the sides, fold and tuck in the fold. This way it stays in place but you have to do it neatly so its not obvious.