OVERLAY ™ The Overlay™ is a flexible sports fabric sleeve that integrates a new type of adjustment system to create a uniform tightness in the socket. The adjustment system contains a series of pneumatic cells that effectively compensates for the volumetric variation of the residual limb. This system replaces the need to use prosthetic socks on a daily basis and adapts to different residual limb morphologies. This product has also been designed to be easily used with a majority of existing liners, without needing any equipment change or adjustment.