Acrylic fiber is fluffy, curly and soft, with good elasticity, but the residual deformation after repeated stretching is large, so the cuff and neckline of acrylic fabric are easy to deform. Acrylic fiber is more than 10% lighter than wool, but its strength is more than 2 times; The resilience of wool is not as good as that of wool when the elongation is small, and the resilience of wool is better than that of nylon during wearing.