Hi there, thank you for sharing your feedback. We would like to clarify a technical detail regarding above-knee (AK) prosthetic systems to help you and other users get the best performance.

AK prostheses require a completely airtight seal to create and maintain suction. A standard Cushion (or even Locking) gel liner by itself cannot hold suction without an external suspension method. To achieve a proper vacuum/suction fit with this liner, you will need to use it in combination with an external prosthetic gel sleeve (which rolls over the outside of the socket and attaches to your thigh) and a properly functioning one-way expulsion valve on your socket.

If you are not using an external sleeve, air will inevitably leak into the socket, causing the suction to fail. We highly recommend checking your current suspension setup or consulting with your prosthetist. Our team is also always here to guide you to the right setup for your mobility needs!