 As an amputee, this little sock thing actually serves a really important purpose. I recently had surgery, meaning that there is still a lot of swelling, also still experiencing a lot of nerve pain, and that is where the shrinker comes in. Shrinkers are made of pretty tight, yet still stretchy material. You put them over your little nubbin. As you can see, they fit pretty snug. First of all, as the name suggests, they help to shrink your leg. If there's swelling or other issues going on, they can help shape it, kind of push any of that swelling out. Additionally, if you do deal with pain, nerve pain, having pressure around the spot that hurts can be really helpful. I wore these probably for about a year after my initial amputation and haven't touched them since, but after this most recent surgery, my prosthetics suggested I start wearing them again to get the swelling down, get the shape back in my leg, so that I can get back into a permanent socket where the volume size isn't changing all the time anymore. Something that a lot of people don't know is that there's volume changes that happen pretty much constantly as an amputee. You can wake up one morning and your leg not fit because you had too much salt the day before, which is super annoying. So shrinkers help with maintaining size, shape, getting swelling out of there, and also helping pay management. They're pretty cool.