Acrylic fibers are kinds of synthetic fibers that in nature are similar to synthetic wool. 85 % of the chemical structure of this fiber is made of mono acrylonitrile.  This kind of fiber has a wide range of usage in rugs, carpets, knitting fabrics, blankets, etc.

Nylon often is combined with other fibers such as wool, cotton, viscose, and acetate to increase moisture absorption and durability. It used in socks, underwear, sleep wears, jackets, shirts, carpets, and furniture. In general, nylon fibers made fabrics are high resistance and durable and do not absorb moisture so they’re not a good choice to wear in warm weather.