Modular Clothing Pack + Fabric Material

Are these clothes dynamically adjusted to fit every model or are they restricted to a certain base model? Btw, I would need realistic sci-fi stuff and basically do not buy stuff which is expensive. Though from a seller perspective i think it makes more sense to sell for a low price, thus more can afford it and overall if the product is good, more returns, and you are not a scumbag to sell overpriced = win-win.