13x4 Frontals are a great way to have great parting anywhere in the front of your head. 13x4 means 13 inches long and 4 inches wide or across. Frontals are great for sew-ins or wigs and wanting more natural finished look where you can still be able to part anywhere in the front while not having to worry about any of your hair hanging out around the sides. This Swiss Lace comes pre-plucked with baby hair so you can customize to your desired look.