Sleeve - 'Prototype' (right)

The entwining of human and machine defines a capsuleer's life - each can't function without the other - and it may be argued that together they compose a new organism, one that shucks off both of its skins for fresh ones when needed. Some capsuleers try to express that even though parts of them are composed of machinery - from the implants in their heads all the way up to the massive ships they control - all of it is really only a cover for a human being. Or the other way around.