Many customers find that our Australian sheepskin car seat covers are more beneficial on a hot sunny day than on cold winter mornings. As surprising as this sounds, it holds very true. Sheepskin has an old slogan of "Warm in winter, cool in summer" which is absolutely accurate. The secret is that wool has hollow fibres which promote air flow and wick away moisture. This helps to insulate against heat and cold and regulates body temperatures. Even Black sheepskin seat covers are pleasantly cool on a summer day.