Propylene-Based Elastomers and Propylene Polymers Useful for Foam Applications

A foam composition comprising:

• (a) from about 25 wt % to about 60 wt % of a propylene-based elastomer based on the foam composition, wherein the propylene-based polymer elastomer has an ethylene content of about 15 wt % to about 30 wt % based upon the weight of the propylene-based elastomer;
• (b) a propylene polymer, comprising a homopolymer of propylene or a copolymer of propylene with from about 0.5 to about 4 wt % ethylene or C4 to C10 alpha-olefin comonomer derived units;
• and
• (c) from about 0.5 to about 5 wt % of a foaming agent based on the foam composition, wherein the ratio of the propylene-based elastomer to the propylene polymer is about 40% to about 60%.