Butterfly Rozena vs Nittaku Fastarc S-1: Which Should You Buy?

UltraSpin comparison · 2026-06-12 · rubber

Butterfly RozenaNittaku Fastarc S-1
Our rating8.4/107.9/10
best_sidebothforehand or backhand
controlhigh70
speed13.0/1497
spin10.8/1296
sponge_hardness~35°35 degrees
typetensor inverted (Spring Sponge)inverted
weight_uncut_g67around 41-43g

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Rozena (8.4) remains the confidence builder. Fastarc S-1 (7.9 rating) is the speed-first alternative at lightweight (around 41g uncut vs. Rozena’s 67g). S-1 delivers genuine tensor pace without excessive stiffness, making it accessible to developing players. However, spin output lags behind both Rozena and higher-end tensors like G-1.

Rozena wins overall versatility. S-1 suits all-round attackers transitioning from beginner rubbers who prioritize pace and lightweight swing over peak spin.

FAQ

Why is S-1 so much lighter than Rozena?

Design intent. S-1 targets accessibility and swing speed; Rozena’s weight comes from its forgiving, spin-capable sponge.

Can S-1 match Rozena spin?

No. S-1’s spin output is noticeably lower. Rozena excels at consistent looping; S-1 emphasizes pace.

Is S-1 good for beginners?

Better than P-1 by far. S-1’s forgiving softness and lightweight nature suit developing all-round attackers.

Best blade pairing for S-1?

All-wood and moderate off-blades. The lightweight nature pairs well with blades of any speed.

Which excels at blocking?

Both block well. S-1 adds stability through low spin-sensitivity; Rozena’s control and touch dominate.