 While putting my prosthetic leg on and off, some of you guys have noticed this thing. What is this? Every time I put my prosthesis on, I take this little squishy button and put it right here. The reason for that is pain. So without this, the weight gets distributed unevenly in my socket and I get pain right here because there's too much pressure on the end of my leg. So if we take this, we're kind of artificially building up a part of my leg. And while my leg is on, I don't really feel it. Then we just pop my leg on and we're good to go.