1. Feel: very soft is silk, viscose, nylon.
2. Weight: lighter than nylon, nylon, polypropylene; cotton is heavier than cotton, hemp, viscose, rich fiber; similar to the weight of silk is vinylon, wool, vinegar fiber, polyester.
3. Strength: stretched to break by hand, weaker strength is glue, vinegar fiber, hair; strong is silk, cotton, hemp, synthetic fiber, etc.; after wetting, the strength is significantly reduced is protein fiber, sticky Glue, copper ammonia fiber.
4. Elongation: When stretching by hand, it feels hair and vinegar fiber; the smaller one is cotton and hemp; the moderate one is silk, viscose, fiber and most synthetic fiber.