Abstract: Half sock, in general, can cover the anterior limb of a foot, leaving the heel bare. The half sock includes a sock housing with a rear opening for insertion of the foot therein. It is made of a suitably cushioning, durable, flexible, thermally-insulating and physically-proportioned material, for one illustration, a neoprene-containing material, for example, an about 3-mm neoprene material having a flexible nylon lining on either side thereof. The half sock can have, in essence, mirror image symmetry through an imaginary plane bisecting its top and bottom portions. It can include inwardly-directed front tapers to accommodate the big and the smaller toes of the foot, and include inwardly-directed rear tapers to accommodate the arch of the foot. It can be made of a one-piece web in a clamshell like pattern, having side edges butted and sewn together so that there is little or no bump.