Katias. Kaitias is smoother in hand, better in heat preservation and moisture absorption and breathability than Caesar's underwear. Kaitias is a kind of natural fiber with thin and slender silk and good fabric luster and comfort, so that Kaitias is better than Caesar's underwear. Katie silk is a continuous filament produced when the cocoon matures, and it is a natural fiber. Silk is thin and slender, with good luster, comfortable to wear, smooth and plump to the touch, good thermal insulation, moisture absorption and breathability. Kaitias velvet silk skin-friendly clothing.