A thermoplastic elastomer compound, consisting of: (a) from 25 to 50 weight percent, by weight of the compound, of at least one thermoplastic elastomer, wherein the thermoplastic elastomer is a styrenic block copolymer selected from the group consisting of styrene ethylenebutylene styrene copolymer, styrene ethylene-ethylene-propylene styrene copolymer, styrene ethylene-propylene styrene copolymer, and combinations thereof; (b) from 5 to 70 weight percent, by weight of the compound, of at least one thermal capacity agent, wherein the thermal capacity agent is selected from the group consisting of low oil content linear paraffin waxes having an oil content of less than 0.5% as measured according to ASTM D721, C 14 -C 16 linear paraffin waxes, single cut linear paraffin waxes, and combinations thereof, wherein the thermal capacity agent is directly dispersed in the compound; (c) from 2 to 5 weight percent, by weight of the compound, of polyolefin, wherein the polyolefin is selected from the group consisting of polyethylene, polypropylene, and combinations thereof; (d) from 0 to 15 weight percent, by weight of the compound, of plasticizer; (e) from 0 to 0.2 weight percent, by weight of the compound, of phenolic antioxidant; (f) from 0 to 0.2 weight percent, by weight of the compound, of phosphite stabilizer; (g) from 0 to 10 weight percent, by weight of the compound, of additives selected from colorants, fillers, flame retardants, foaming agents, ultraviolet light absorbers, and combinations thereof; wherein the compound experiences a solid-solid phase transition whenever the thermal capacity agent melts into liquid form in the compound. (a) from 25 to 50 weight percent, by weight of the compound, of at least one thermoplastic elastomer, wherein the thermoplastic elastomer is a styrenic block copolymer selected from the group consisting of styrene ethylenebutylene styrene copolymer, styrene ethylene-ethylene-propylene styrene copolymer, styrene ethylene-propylene styrene copolymer, and combinations thereof; (b) from 5 to 70 weight percent, by weight of the compound, of at least one thermal capacity agent, wherein the thermal capacity agent is selected from the group consisting of low oil content linear paraffin waxes having an oil content of less than 0.5% as measured according to ASTM D721, C 14 -C 16 linear paraffin waxes, single cut linear paraffin waxes, and combinations thereof, wherein the thermal capacity agent is directly dispersed in the compound; (c) from 2 to 5 weight percent, by weight of the compound, of polyolefin, wherein the polyolefin is selected from the group consisting of polyethylene, polypropylene, and combinations thereof; (d) from 0 to 15 weight percent, by weight of the compound, of plasticizer; (e) from 0 to 0.2 weight percent, by weight of the compound, of phenolic antioxidant; (f) from 0 to 0.2 weight percent, by weight of the compound, of phosphite stabilizer; (g) from 0 to 10 weight percent, by weight of the compound, of additives selected from colorants, fillers, flame retardants, foaming agents, ultraviolet light absorbers, and combinations thereof; wherein the compound experiences a solid-solid phase transition whenever the thermal capacity agent melts into liquid form in the compound.