The biggest advantage of modal underwear lies in its super hygroscopicity and softness. The raw material of modal fiber is beech, which is first made into wood pulp and then processed into fiber through special spinning process. The whole process of fiber production has no pollution. Its dry strength is close to polyester, its wet strength is much higher than that of ordinary viscose, and its luster, softness, hygroscopicity, dyeability and dyeing fastness are better than those of pure cotton products. Modal underwear has always been my first choice, although its durability is slightly worse than other materials.