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Butterfly updated 2025 rubber specifications chart
The numbers are official Butterfly not mine. (Does not mean they are gospel)
I would use the chart only to make ballpark comparison between two similar rubbers such as Dignics o5 or 09c and Impartial XB vs XS etc.

Use this link to view in a separate browser tab with better scrolling features

Click this link to view the topic thread about 2023 charts some comments that apply 2025 chart