Differences Between Various "D" Values

Differences Between Various "D" Values

In the textile industry, "D" stands for Denier, which indicates the thickness of the yarn. Simply put, the higher the D number, the thicker the yarn; the lower the D number, the finer the yarn.

Here are the common D ranges and their corresponding textures and uses:
· Ultra-fine D (e.g., 15D-50D): Extremely soft, lightweight, and smooth texture. Mainly used for stockings, high-end underwear, ski wear, and other ultra-lightweight fabrics. 20D is currently  widely used fine denier fabric for down jackets in China.
· Medium-fine D (e.g., 50D-100D): Balances softness with a certain degree of stiffness. Mainly used for summer dresses, shirts, linings, etc.
· Medium-heavy D (e.g., 100D-300D): Feels fuller, with good stiffness and durability. Mainly used for jackets, windbreakers, sportswear, luggage, and other everyday fabrics.
· Ultra-heavy D (e.g., above 300D): Very thick, rigid, and abrasion-resistant. Mainly used for backpacks, tents, footwear materials, industrial fabrics, etc.

 A Little Tip: D Number vs. F Number (Finer Filaments)

You might come across a specification like "150D/48F". In addition to the D number, the following "F" (number of filaments) is also crucial:

· Low F number (e.g., 24F): The individual filaments are thicker, resulting in a stiffer hand feel and higher luster.

· High F number (e.g., 288F): The individual filaments are extremely fine, giving the fabric a softer hand feel, even a suede-like texture (e.g., microsuede).