Tibhar's IV-S SGS combines TIBHAR's classic IV-S blade construction using Ayous outer layers with the new Sponge-Grip-System (SGS) design. The racket shape is optimized to work in tandem with the grip shape to permit full use of your offensive potential without having to give up the unique soft, but fast, playing sensation. Once in your hand, you won't want to give this blade to anyone!