Babolat's RPM Soft is the latest addition to their RPM range and it belongs in a class on its own. Created to replace the Babolat Origin string, RPM Soft is a very unique monofilament that delivers the playability of a high-end multifilament but with more durability thrown in. The string is constructed from a uniquely flexible polyamide core (which gives you the playability) but also has two co-polyamide outer layers for that added durability and comfort. The result is a string that feels comfortably crisp whilst also delivering amazing feel, controllable power and impressive durability for a high performance, non-poly.