In our opinion, this is the most important part of any prosthesis. If the sleeve is high quality, the use of the prosthesis will be a joy, if not, it will turn into hell. And no expensive "hardware" will save your prosthesis. After all, if gold shoes are too small for you by 4 sizes, you will not be able to walk in them, despite the fact that they are golden. This is a costly element - the cost of work, including prosthetics, training in the use of a prosthesis, walking training (for lower limbs) and accompanying the patient throughout the entire period of use of the prosthesis.