Cap - garment, soft headgear borderless usually insulated. Traditional attribute winter army uniforms. Winter hat in Russia has always sheathe fur, the top of it often embroidered patterns decorated with pearls and even precious stones (such as the famous Monomakh).
Basic materials for sewing and knitting caps today - natural or artificial fur, leather, felt, various types of yarn. Classic fur hats are considered hawthorn, his cap, a cap with ear-flaps, hat, etc.