Shearling is present in a lot of aviator jackets, although not all of them. The original style of flight jackets, which were shearling-lined for use by pilots at high altitudes, is still popular today. When searching for a mens aviator jacket, you may choose whether the jacket is lined with genuine sheepskin, imitation shearling, or none at all. The climate and individual preferences will determine the choice. Lighter alternatives are ideal for colder days, but a jacket with a shearling inside will provide extra warmth and flair. You should study the product description before making a purchase to find out what sort of lining and insulation the jacket will have.