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 pneumatic cell system that effectively compensates for the volumetric variation of the residual limb and greatly improves comfort. This system replaces the need to use prosthetic socks daily and adapts to different residual limb morphologies. This product has also been designed to be easily used with most existing liners and sockets without needing any equipment change or adjustment.