In accordance with the embodiments described herein, there is provided an enclosure system including an enclosure formed of an insulating material, and at least one heatsink arrangement formed of a thermally-conductive material. The heatsink arrangement includes at heat conductive surface configured as one of a pyramid, an inverted pyramid, a plateau, a spherical segment, and an inverted spherical segment. The heatsink arrangement in the enclosure system can be integrally formed from the enclosure such that a demarcation between the heatsink arrangement and the enclosure is water-tight. The enclosure and the heatsink arrangement can also be simultaneously integrally formed and enmeshed using additive manufacturing processes.