The present invention is directed towards a multi-layer golf ball which comprises a core with one or more layers; at least one cover layer; and one or more mantle layers disposed between the core and cover layer, wherein the mantle layer comprises thermoplastic polyetherester, thermoplastic polyesterester dynamically vulcanized thermoplastic elastomer, functionalized styrene-butadiene elastomer, thermoplastic polyurethane, metallocene polymer or blends thereof and thermoset materials. Further, the present invention is directed to a ball having a core, a coverlayer and a mantle layer therebetween wherein the mantle layer has a flex modulus of less than 10,000 psi and the cover has a flex modulus greater than 80,000 psi.