A sock meant to be worn with a training shoe, with the ankle cut low such that very little appears above the shoe. Training socks are usually made of cotton or synthetic materials and have many small holes in them where you can slip your foot in and out. The purpose of a training sock is to protect your shoes from wear-and-tear issues related to running in sneakers. If you always wear out leather shoes, then it's important to get them care products on the market so that you aren't having to buy new pairs too often. The same goes for training shoes; if they aren't taken care of, then they won't last as long and will need to be replaced more frequently. Training socks can also help prevent injuries by providing some cushioning between your feet and the ground. The holes in the sock allow your feet to breathe, too! Finally, training socks can look good or bad depending on what style of shoe you are wearing. If you are a fan of the Vibram fivefingers brand, for example, then these will look cool with any type of shoe but not be as essential if you are only wearing tennis shoes or runners. There are two types of training socks: functional and fashionable.