Even when the same artificial fiber is used for blades, performance varies based on where the fiber layers are positioned. Blades with an Outerfiber™ structure have artificial fiber layers placed just beneath the surface veneer--a long-established design. They enhance the feel of artificial fibers, enabling faster shots. In contrast, blades with an Innerfiber™ structure feature artificial fiber layers near the wooden core, a configuration first introduced in Butterfly's blades in 2009. This structure provides a touch of longer dwell time, while preserving the unique characteristics of the fiber. Each structure offers unique characteristics, so select your blade based on the performance and feeling you desire.
Comparison between Outerfiber™ structure (Left) and Innerfiber™ structure (Right) ■：Artificial Fiber A：Surface wood B：Second layer C：Wooden core
