Propylene-based copolymer compositon

A polyolefin composition comprising:

• A) from 50 wt % to 80 wt %;
• of a copolymer of propylene with ethylene, having:
• i) a content of ethylene derived units, measured by NMR, between 2.5 wt % and 6.5 wt %, based upon the total weight of the copolymer (A);
• and
• B) from 20 wt % to 50 wt % of a propylene ethylene copolymer containing from 40.0 wt % to 65.0 wt % of ethylene derived units, measured by NMR;
• wherein the polyolefin composition, having:
• i) a content of ethylene derived units, measured by NMR, between 12.0 wt % and 35 wt %, based upon the total weight of the polyolefin composition;
• ii) a content of ethylene derived units, measured by NMR, in the fraction soluble in xylene at 25° between 35.0 wt % and 56.0 wt %, based upon the total weight of soluble fraction;
• iii) a melt flow rate (ISO 1133 (230° C., 21.6 kg) ranging from 0.1 g/10 min to 3.0 g/10 min;
• iv) xylene solubles at 25° C. ranging from 23 wt % to 43.0 wt %, based upon the total weight of the polyolefin composition;
• v) an intrinsic viscosity, measured in tetrahydronaphthalene at 135° C., of the fraction soluble in xylene at 25° C. ranging from 7.7 dl/g to 15.0 dl/g;
• and
• vi) an intrinsic viscosity, measured in tetrahydronaphthalene at 135° C., of the whole polyolefin composition ranging from 7.7 dl/g to 15.0 dl/g;
• the sum A+B being 100.