Polyolefin composition for fibers

A polyolefinic fiber comprising:

• from 2 wt % to 20 wt % relative to the total weight of the fiber of a polyolefin composition comprising:
• A) 5-35% by weight of a propylene homopolymer or a propylene ethylene copolymer containing 90% by weight or more of propylene units;
• component A) containing 10% by weight or less of a fraction soluble in xylene at 25° C. (XSA), both the amount of propylene units and of the fraction XSA being referred to the weight of A);
• B) 20-50% by weight;
• of a copolymer of ethylene and a C3-C8 alpha-olefin containing from 0.1% to 20% by weight of alpha-olefin units and containing 25% by weight or less;
• of a fraction soluble in xylene at 25° C. (XSB), both the amount of alpha-olefin units and of the fraction XSB being referred to the weight of (B);
• and
• C) 30-60% by weight of a copolymer of ethylene and propylene containing from 25% to 75% by weight of ethylene units and containing from 40% to 95% by weight of a fraction soluble in xylene at 25° C. (XSC), both the amount of ethylene units and of the fraction XSC being referred to the weight of (C);
• the amounts of (A), (B) and (C) being referred to the total weight of (A)+(B)+(C), the sum of the amount of (A)+(B)+(C) being 100.