There are two effective methods for identifying underwear fabrics when selecting underwear: sensory method and label recognition method.

Sensory method

Fiber name	Feel characteristics
Cotton	Slim and soft, small elasticity, easy to wrinkle.
Linen	It feels rough and often has a flaw.
Silk	It is shiny, soft and light, and it has a rustling sound when it is pinched. It has a cool feeling.
Wool	It has elasticity, soft luster, warm hand and not wrinkle.
Polyester	Good elasticity, smooth, strong, stiff and cool.
Polyamide	Not easy to break, elastic, smooth, light texture, not as soft as silk.
Vinal	Approximate cotton, the gloss is dark, not as soft as cotton, the rebound is not good, and it is easy to wrinkle.
Acrylic	It has good warmth, high strength, lighter than cotton, and soft and fluffy.
Viscose fiber	It is softer than cotton, and its surface gloss is stronger than cotton, but its fastness is not good.

Signage recognition

The limitations of the sensory method are coarser, and the application is not wide, and there is nothing to do with synthetic fibers and blended fabrics. For some reputable shopping malls or underwear brands, you can directly identify the underwear fabric components by identifying the identification plates. These signs can only be hung by the inspection of the textile quality inspection agency and have strong authority. Generally, there are two contents on the label, one is the fiber name, and the other is the fiber content (generally expressed as a percentage). Sometimes you will find that the name of the fiber on the sign is in English and it seems very laborious. The Chinese and English names of some common fibers are listed below.

Chinese name	English name
棉	Cotton
麻	Linen
腈纶	Acrylic
氨纶	Polyurethanes
羊毛	Wool
丙纶	Polypropylene
丝	Silk
氯纶	Polyvinyl Chloride
粘胶	Rayon
铜氨纤维	Cuprammonuium(Cupro)
涤纶	Polyester
醋酸纤维	Acetate
锦纶	Polyamide
尼龙	Nylon
弹性纤维	Polythane(Elastean)
维纶	Vinal
人造丝	Nitrocellulose Silk