. . "A) 10-25% of a propylene homopolymer or a copolymer of propylene with at least one comonomer selected from ethylene and CH2???CHR alpha-olefins where R is a 2-8 carbon alkyl, the copolymer comprising up to 8% of the comonomer, or a combination of the propylene homopolymer and the copolymer of propylene; B) 75-90% of a copolymer of ethylene and (i) propylene or (ii) CH2???CHR alpha-olefins, where R" . .