The Ethnocare Overlay TF is an adjustable inflatable interface worn over the liner and inside a transfemoral socket. Its air cells allow users to progressively add or release volume as residual-limb volume changes throughout the day. Two profiles are available to better match different limb shapes and suspension systems: a more cylindrical design for vacuum systems and a more conical design for pin-lock, lanyard, cushion and other suspension setups. The Overlay TF is intended to help users fine-tune fit, stability and control within an otherwise appropriate socket.