A toner comprising a toner particle in which a toner core containing a binder resin is coated with a shell layer, wherein the binder resin contains a polymer A that has a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer that is different from the first polymerizable monomer; the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylate esters having an alkyl group having 18 to 36 carbon atoms; the content of the first monomer unit in the polymer A is 5.0 mol% to 60.0 mol% with reference to the total number of moles of all the monomer units in the polymer A; the content of the second monomer unit in the polymer A is 20.0 mol% to 95.0 mol% with reference to the total number of moles of all the monomer units in the polymer A; the following formula is satisfied when the SP value of the first monomer unit as calculated by the Fedors method as indicated in the description is denoted by SP 11 (J/cm 3) 0.5 and the SP value of the second monomer unit as calculated by the Fedors method as indicated in the description is denoted by SP 21 (J/cm 3) 0.5, 3.00 ≤ SP 21 − SP 11 ≤ 25.00 the shell layer is observed over at least 90% of the circumference of the toner cross section in an image of the toner cross section observed with a transmission electron microscope; the shell layer is constituted of at least one amorphous resin selected from the group consisting of homopolymers, alternating copolymers, and random copolymers; and the following formula is satisfied when the shell layer is constituted of two or more amorphous resins, wherein the resin having the highest SP value of the resins constituting the shell layer as calculated by the Fedors method as indicated in the description is designated as resin S1, the resin having the lowest SP value of the resins constituting the shell layer as calculated by the Fedors method as indicated in the description is designated as resin S2, the SP value of the resin S1 as calculated by the Fedors method as indicated in the description is denoted by SP S1 (J/cm 3) 0.5, and the SP value of the resin S2 as calculated by the Fedors method as indicated in the description is denoted by SP S2 (J/cm 3) 0.5, SP S 1 − SP S 2 ≤ 3.0 the binder resin contains a polymer A that has a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer that is different from the first polymerizable monomer; the first polymerizable monomer is at least one selected from the group consisting of (meth)acrylate esters having an alkyl group having 18 to 36 carbon atoms; the content of the first monomer unit in the polymer A is 5.0 mol% to 60.0 mol% with reference to the total number of moles of all the monomer units in the polymer A; the content of the second monomer unit in the polymer A is 20.0 mol% to 95.0 mol% with reference to the total number of moles of all the monomer units in the polymer A; the following formula is satisfied when the SP value of the first monomer unit as calculated by the Fedors method as indicated in the description is denoted by SP 11 (J/cm 3) 0.5 and the SP value of the second monomer unit as calculated by the Fedors method as indicated in the description is denoted by SP 21 (J/cm 3) 0.5, 3.00 ≤ SP 21 − SP 11 ≤ 25.00 the shell layer is observed over at least 90% of the circumference of the toner cross section in an image of the toner cross section observed with a transmission electron microscope; the shell layer is constituted of at least one amorphous resin selected from the group consisting of homopolymers, alternating copolymers, and random copolymers; and the following formula is satisfied when the shell layer is constituted of two or more amorphous resins, wherein the resin having the highest SP value of the resins constituting the shell layer as calculated by the Fedors method as indicated in the description is designated as resin S1, the resin having the lowest SP value of the resins constituting the shell layer as calculated by the Fedors method as indicated in the description is designated as resin S2, the SP value of the resin S1 as calculated by the Fedors method as indicated in the description is denoted by SP S1 (J/cm 3) 0.5, and the SP value of the resin S2 as calculated by the Fedors method as indicated in the description is denoted by SP S2 (J/cm 3) 0.5, SP S 1 − SP S 2 ≤ 3.0