Embodiments of the technology include a prosthetic socket suspension device having a distal cup portion and a liner garment portion, these two portions being bonded together. In various embodiments, a distal cup may be disposed within a liner, a liner may be disposed within a distal cup, and a distal cup may be disposed between distally bifurcated internal and an external layers of a liner. Distal cup are sized and shaped to accommodate a distal portion of a residual limb of a patient. Distal cup embodiments may be formed from either a thermoplastic or thermoset plastic composition. Thermoplastic cup embodiments may be thermally reformed around the distal portion of the limb so as to create a highly conformal fit. Embodiments of the technology further include methods fabricating the prosthetic suspension device, and methods of thermally reforming the suspension device so as to fit a distal aspect of the residual limb of a patient.