Advantages: good hygroscopicity and heat resistance. Alkali resistance, good sun resistance. Soft texture and good dyeability. Disadvantages: poor wrinkle resistance and shrinkage; Poor elasticity.

Polyester (polyester)

Advantages: high strength, wear resistance, good elasticity and strong deformation resistance. Easy to wash, quick-drying, no need to iron Disadvantages: low hygroscopicity, easy to balloon. Acid and alkali resistance, heat resistance is higher than ordinary fiber. Commonly used blended fabrics are cotton polyester (polyester) and wool polyester.

spandex fiber

Advantages: high elasticity. Acid and alkali resistance, perspiration resistance, seawater resistance, dry cleaning resistance and wear resistance. The manufacture clothes are light in weight, soft in texture and comfortable to fit. Disadvantages: easy to get static electricity.

So overall, the fabric elasticity of these pants is good.