A polyolefin composition made from or containing:
T1) 70-95 wt %, a polyolefin component containing:
a1) from 30 wt % to 70 wt % of a propylene based polymer; and
a2) from 30 wt % to 70 wt % of an ethylene based polymer;
the sum of a1) and a2), being referred to the total weight of a1) and a2), being 100; and
T2) 5-30 wt % of a propylene ethylene copolymer containing from 2.0 wt % to 10.0 wt %; of ethylene derived units and having a melt flow rate (230° C./2.16 kg) ranging from 0.5 to 20.0 g/10 min, and having a fraction soluble in xylene at 25° C. lower than 20 wt %.

the sum of the amount of T1) and T2), being referred to the total weight of T1) and T2), being 100.