Retail price was recorded at collection time and may differ at checkout.
Coupang delivers inside Korea only, so we link to the brand’s own page instead. The price above is the Korean retail price.
Roundell
Built to draw out a player's potential — High Tension speed and spin meet the control of a soft sheet and sponge, plus a satisfying sound on hard hits. Recommended for players aiming for top-level play.
Performance
Butterfly official, 0-100About this product
A non-tacky inverted rubber, described as combining high-tension speed and spin with the control a softer topsheet and sponge provide. Hardness 35°.
That sits close to Tenergy 05’s hardness (36°), though with no official spin or speed figures published, a direct comparison isn’t possible. At ₩40,000 — less than half of Tenergy 05’s roughly ₩92,000 — it reads as an entry-priced way into a similar hardness range.
What the numbers say
Inverted, 35° sponge. Its speed of 7.7 ranks 17 of 20 rubbers, among the lowest. The other axes sit at a similar level, so the profile is well balanced. It throws a lower, flatter ball. Based on the manufacturer’s published figures.
This paragraph is not a copied review — it is generated from the figures and rankings collected on this site, and changes when they do.
Full specifications
| Surface type | Inverted |
| Tackiness | Non-tacky |
| Sponge hardness | 35° |
| Thickness options | 2.1mm / 1.9mm |
| Colours | Red / Black |
| Made in | Japan |
Blades that pair with this rubber
Real player setups and level-based recommendations come first.
Top ONE premium-grade woodHurricane King Q968
5-ply + 2 Arylate-Carbon plies (Top ONE grade wood)
Matched at a similar mid-range grade
Innerforce Layer ALC
5-ply + 2 ALC plies
(1)Matched at a similar mid-range grade
Harimoto's ultra-aggressive two-winged play at the tableTomokazu Harimoto Innerforce ALC
5-ply + 2 Arylate-Carbon plies
Matched at a similar mid-range grade
Falcima
5-ply
Matched at a similar mid-range grade