Man Bun by Groupon: For That Clip-On Game of Thrones' Kit Harington, One Direction's Harry Styles Look

This fad is officially taking man-dom by storm. Thanks to online company Groupon, it is attachable, detachable and is aptly called Clip In Man Bun.

Men have taken to the pulled-back hairstyle like fish to water. So much so that over time several varieties of this look have cropped up such as the full man bun (full hair pulled up and piled on top of the head), the low man bun (full hair pulled back but tied closer to the base of the skull), top knot or sometimes called the undercut (top hair pulled into a small knot on top of the head with the sides either shaved or closely cropped) and the pineapple (a very small spruce of hair tied in a knot on top of the head).