Babolat combines RPM Blast, one one one games most iconic (and spin friendly) polys, with RPM Soft, an ultra comfortable polyamide  (nylon) monofilament. As such, this combo offers a greater range of playability than is offered by a single string type. Players looking for more control and durability should put RPM Blast in the mains. Players looking for more comfort and power should put RPM Soft in the mains. 

• Gauge:
  • RPM Blast: 17/1.25mm
  • RPM Soft:  16/1.30mm
• Length:
  • RPM Blast: 40ft/12.2m
  • RPM Soft :  40ft/12.2m
• Composition:
  • RPM Blast - Co-polyester monofilament
  • RPM Soft: Polyamide core with two co-polyamide wraps.