"D" or "denier" refers to the unit of fiber size. The thickness of leggings is based on denier, and how many "D" or "denier" are marked on the packaging of each pair of leggings. Denny number is positively correlated with thickness. Generally speaking, the smaller the D number, the thinner the leggings. The higher the D number, the thicker the leggings.

Extended data:

Standards for high-quality stockings:

1, material: made of super elastic yarn, which can withstand snagging caused by heavy objects and accidental collisions.

2, appearance: pick up the stockings to the light, crystal clear, it is extremely difficult to find socks with particles and tree patterns, like transparent glass. See if the surface of stockings is smooth horizontally. Good quality stockings should not have exposed threads, so as not to cause spinning, which not only affects the appearance but also is easy to be damaged. Pull yourself vertically and feel the elasticity of your socks.

The pattern of stockings should not have exposed needles, otherwise it will directly affect the fastness of stockings. Toes and heels of socks should be smooth without exposed needles. The upper neckline of stockings should be uniform. If the neckline is uneven, the stockings will be torn due to uneven stress when wearing.

3. Weaving: socks are uniform in thickness, and the rubber band at the waist of pantyhose is particularly widened, so it is not easy to slip when worn.

Baidu encyclopedia-Danny number