Comfort Products Prosthetic Sheaths offer great comfort and durability in one single sheath. The objective when wearing a prosthetic sheath is to reduce any shear stresses or rubbing along specific areas of your residuum. Simply drinking your morning coffee or having a Coke or Pepsi at lunch can cause natural volume changes leading to discomfort. As a prosthetic user you can address this discomfort by using a friction fighting sheath. The stretchable nylon and polyester construction offers a snug fit that safeguards your limb against friction caused by socket looseness. Sheaths function as a barrier to perspiration and Comfort Stump Sheaths are no exception.