A cross-section of the skin with hair follicles are detailed in this 6-piece model of the human body s largest organ. Visit your own skin up close. much closer than just looking at your arm This Ein-O model provides a layered detail view of human skin with molded bright plastic and puzzle-like assembly. Learn through hands-on exploration as well as through the included mini-guide that explains the various elements of the skin and how they work. Ages 7 up.