Below-Knee Prosthetic Liner by Silipos Silo Sheath Extra Life is a 3-ply sock specially designed for lining residual limb. This stump sock improves skin appearance, reduces skin breakdown and ensures a comfortable motion. The prosthetic sock is constructed using an extra layer of nylon with a 2 mm mineral oil gel lining between the two fabric layers. The gel-lined prosthetic sheath is ideal for individuals who experience friction between the residual limb and the prosthesis. The gel-lined stump sock reduces shearing, abrasion and cushions the residual limb. This easy to wash and reuse the latex-free sheath is hypoallergenic and skin-soothing.