Wool Suits. Wool suits are currently the most popular suits on the market. The reasons for this is that wool is a very versatile material, it is easy to work with, and it can be abundantly harvested. There are also many different types of wool that one can make a suit out of. For instance men’s suits can be made from virgin wool and worsted and can even be spun at different speeds to provide different comfort levels. You’ll also find many heavier wool materials on the market for winter weather use.