Human hair will always be preferable to other materials when it comes to wigs. They simply look so much better and more natural. No one will suspect that you are wearing a wig while going around at parties and other events.
You can get long human hair wigs of any length with most options falling between 18 to 24 inches. Go even longer if you wish by dealing with specialty shops who can hunt these down for you. Just be prepared to pay the premium as these are rare.
They come in different styles and colors. You can achieve a variety of looks without much effort by simply putting them on. Go blonde or go brunette. Experiment with unconventional colors if you wish. Try on the hairstyles of celebrities in a snap.
Find a good brand known for durability and comfort.