"30 hair," part of a hair counting system used to categorize mohair, refers to the fiber diameter of 30 microns. As a reference, a human hair measures approximately 100 microns in diameter. This measurement plays a crucial role in determining the softness, luster, and crimp of mohair.
"30 hair" mohair is highly sought after due to its luxurious texture and silky drape, making it a popular choice for high-quality textiles. Historically, the development of a machine to measure mohair fiber diameter in the late 19th century revolutionized the industry, allowing for more precise classification and consistent quality.