hoose the bob hairstyle for a medium hairstyle. So popular medium hairstyles that can be styled easily are the bob hairstyle, which uses the same length all around the hair to create an appealing hairstyle that can be easily managed.Medium bob hairstyles have a variety of styling options that can be created from the hairstyle. As there are many hairstyles and options available through the medium bob, many people decide to use this type of hairstyle to create a change, complete a makeover or even choose a hairstyle that is versatile and can be worn for day and night.