The inside outside look into socks. There are many different types of socks; different thicknesses, sizes and materials. The most important difference to me is the material that a sock is made of. I think you should stay away from 100% cotton. Cotton will not wick the moisture away from the feet like other materials will. I have enjoyed socks that are a blend of natural and synthetic materials. One of my favorite is made out of bamboo, crazy to think that socks can be made out of bamboo.