An electronic device for monitoring physiological signals in a mammal, the device comprising: a rigid housing; at least two flexible wings (130,131) extending laterally from the rigid housing, wherein the flexible wings (130,131) comprise a first set of materials which enable the wings (130,131) to conform to a surface of the mammal and the rigid housing comprises a second set of materials, wherein the first set of materials is comprised of a top substrate layer, a bottom substrate layer and an adhesive layer, wherein the adhesive layer is applied to at least two portions of the bottom substrate layer, each portion corresponding to one of the at least two wings (130,131); a printed circuit board assembly housed within the rigid housing, wherein the rigid housing is configured to prevent deformation of the printed circuit board in response to movement of the mammal; at least two flexible electrodes embedded within the flexible wings (130,131), the electrodes configured to provide conformal contact with the surface of the mammal and to detect the physiological signals of the mammal; at least two flexible electrode traces (311,312) sandwiched between the top substrate layer and the bottom substrate layer, each flexible electrode trace (311,312) mechanically decoupled from the rigid housing, the flexible electrode traces (311,312) configured to extend outward from the rigid housing to conform to upper surfaces of the respective flexible electrodes and to transmit electrical signals from the electrodes to the printed circuit board assembly; and at least one hinge portion connecting each wing (130,131) to the rigid housing, characterised in that the hinge portions are thinner than the adjacent wings (130,131) and are portions on which the adhesive layer is not applied such that the hinge portions are configured to flex freely at the area where it is joined to the rigid housing. a rigid housing; at least two flexible wings (130,131) extending laterally from the rigid housing, wherein the flexible wings (130,131) comprise a first set of materials which enable the wings (130,131) to conform to a surface of the mammal and the rigid housing comprises a second set of materials, wherein the first set of materials is comprised of a top substrate layer, a bottom substrate layer and an adhesive layer, wherein the adhesive layer is applied to at least two portions of the bottom substrate layer, each portion corresponding to one of the at least two wings (130,131); a printed circuit board assembly housed within the rigid housing, wherein the rigid housing is configured to prevent deformation of the printed circuit board in response to movement of the mammal; at least two flexible electrodes embedded within the flexible wings (130,131), the electrodes configured to provide conformal contact with the surface of the mammal and to detect the physiological signals of the mammal; at least two flexible electrode traces (311,312) sandwiched between the top substrate layer and the bottom substrate layer, each flexible electrode trace (311,312) mechanically decoupled from the rigid housing, the flexible electrode traces (311,312) configured to extend outward from the rigid housing to conform to upper surfaces of the respective flexible electrodes and to transmit electrical signals from the electrodes to the printed circuit board assembly; and at least one hinge portion connecting each wing (130,131) to the rigid housing, characterised in that the hinge portions are thinner than the adjacent wings (130,131) and are portions on which the adhesive layer is not applied such that the hinge portions are configured to flex freely at the area where it is joined to the rigid housing.