1 material:100% polyester 2 1)Double:   Material:100% polyester   Spec:156 mesh , 75Desh   0.63m diameter at the ring,2.5m length,12.5m circumference.   gram weight:18g/24g 2)Single:    Material:100% polyester    Spec:156 mesh   75Desh    0.63m diameter at the ringh,2.5m length,8m circumference.    gram weight:18g/24g