The DONIC BLUEGRIP S1 fills a crucial gap in the BLUEGRIP series, offering a hardness level that sits between the softer S2 and the firmer C1 and C2 versions. This makes it ideal for stronger professional players who find the S2 too soft but still want the signature touch and rotation of a BLUEGRIP rubber. The S1 features a sticky top sheet and a dynamic, medium-hard sponge with medium pores, providing excellent grip and a powerful catapult effect. It strikes a perfect balance between speed and control, delivering a highly enjoyable playing experience. Designed for offensive players, the BLUEGRIP S1 excels in combining spin and speed for precise, dynamic strokes.