Foamable compositions and soft foams comprise at least an ethylene/.alpha.-olefin interpolymer. The soft foam has a density from about 10 to 150 kg/m.sup.3. The foamable compositions further comprise a blowing agent. The ethylene/.alpha.-olefin interpolymers are a multi-block copolymer comprising at least one soft block and at least one hard block. Methods of making the foamable compositions and soft foams; and foam articles made from the soft foams are also described.

 
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