Long fibers are synthetics. Silk is the only one that is a natural long fiber, but there are longer Scuba Fabric wool and cotton fibers that have some of these characteristics: Lustrous and smooth, pill resistant, more resilient.
Short fibers are natural and synthetic fibers cut. They are cut into short lengths twisted into a yarn that has a fuzzier appearance like soft and fuzzy, tend to pill and wrinkle more easily.
Now wool gabardine is a long fiber and wool flannel is a short fiber.
Be sure to read the labels on ready-to-wear and on the end of the bolt for your best fabric overall guide to fiber content and care.
Manufacturers use blends for decreasing cost, increase prestige, increase wash ability, decrease wrinkling, increase comfort, or increase strength.
A pair of pants that is 65% cotton, 35% polyester will wrinkle less and wear better than all cotton. A pair of pants that is 65% polyester, 35% cotton will wrinkle less and wear better, but be less comfortable.
People today go towards comfort and easy care, so you can determine the best fabric here on the blends of fabrics.
Fabric labels. Here's a list of fabrics that you can decide would be the best fabric for you and they they will wear:
Knitting Stretchy Fabric Linen and Cotton - Has increased absorbency and comfort, less static build-up and better dye ability.