What is a "jerkin"?

A jerkin is a sleeveless, tight-fitting, and short leather or cloth jacket, usually worn over a shirt or under a coat. It was a popular garment for men during the 16th and 17th centuries, especially in Europe. The jerkin was made of various materials, such as leather, silk, wool, and velvet. It could be plain or decorated with buttons, studs, or embroidery. The jerkin was a versatile garment that could be worn for both casual and formal occasions. It was often worn by soldiers, as it provided some protection against cuts and blows. The jerkin remained popular until the 18th century, after which it gradually went out of fashion.