The invention relates to a composition comprising: (A) a random copolymer of propylene and a comonomer, wherein the comonomer is ethylene and/or an α-olefin having 4 to 8 carbon atoms, wherein the amount of propylene-derived units is 90 to 99 wt % and the amount of comonomer-derived units is 1.0 to 10 wt % based on the random copolymer, (B) a C10-C30 aliphatic carboxylic acid amide and (C) a nucleating agent comprising a metal salt of hexahydrophthalic acid represented by formula (I) wherein M1 and M2 are the same or different, and may be combined into one cation, and are selected from at least one metal cation of calcium, strontium, lithium, and monobasic aluminum; and wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are either the same or different and are individually selected from the group consisting of hydrogen, C1-C9 alkyl, hydroxy, C1-C9 alkoxy, C1-C9 alkyleneoxy, amine, and C1-C9 alkylamine, halogens, and phenyl, wherein the amount of (B) in the composition is 1000 to 5000 ppm based on the total weight of the composition and the amount of (C) in the composition is 100 to 1000 ppm based on the total weight of the composition.