Round-up review: our score and verdict are based on published specs and reviews from across the web, not our own play-testing yet.
Babolat’s RPM Blast is a co-polyester string with an octagonal profile and silicone coating, designed to bite the ball for extra spin. Two independent reviews agree this is where it excels, describing serious topspin generation on open-pattern frames and rating its spin above comparable shaped polyester strings.
Both sources also agree the control is genuinely usable once spin is factored in, giving fit, technically sound baseliners precise directional feedback. Where they line up on criticism is a firm, muted feel with little free power, meaning players have to generate their own pace and spin rather than get help from the string bed, and tension maintenance is only average, fading after roughly 8 to 10 hours of hard hitting.
Key specs
- Co-polyester monofilament, octagonal profile
- Cross-linked silicone coating
- Gauges from 15L to 18 (1.20mm-1.35mm)
- Measured stiffness classed as stiff
Verdict
An excellent spin string for aggressive, technically sound baseliners on modern frames, but not one for beginners or arm-sensitive players.