Golf ball

A golf ball comprising a spherical core and one or more cover layers disposed outside the spherical core, wherein at least one layer of the cover layers contains:

• (A) a base resin having a material hardness of 59 or more in Shore D hardness and containing (a-1) an ionomer resin and (a-2) a non-ionomer resin in a mass ratio ((a-2)/(a-1)) of (a-2) the non-ionomer resin to (a-1) the ionomer resin ranging from 1/99 to 50/50;
• and
• (B) a polyrotaxane having a cyclodextrin with at least a part of hydroxyl groups of the cyclodextrin being modified with a caprolactone chain having a carboxyl group at a terminal of the caprolactone chain, a linear molecule piercing through a cyclic structure of the cyclodextrin, and blocking groups located at both terminals of the linear molecule to prevent disassociation of the cyclodextrin, and
• wherein the cover layer containing (A) the base resin and (B) the polyrotaxane contains (B) the polyrotaxane in an amount of from 0.1 part by mass to 20 parts by mass with respect to 100 parts by mass of (A) the base resin.