A transtibial socket for a prosthetic lower limb includes a mesh arranged between rigid struts. The mesh includes a plurality of support members and a plurality of tensile members, optionally in combination with spacer members arranged between different support members. At least one tensioning member coupled with the tensile member extends through of past guides in the struts to an adjustable tensioning apparatus that is configured to allow the mesh to be constricted radially by the amputee-user. The mesh allows for the heat dissipation and volume adjustment, while increasing contact area and force distribution around a residual limb.
