Butterfly · OFF-
Innerforce Layer ZLF
5W+2 ZLF · Inner
Specifications
- Playing style
- OFF-
- Price
- Not published
- Weight
- 86 g
- Thickness
- 5.3 mm
- Plies
- 7
- Composition
- 5W+2 ZLF
- Outer ply
- Limba
- Core wood
- Ayous
- Carbon type
- ZLF
- Fibre placement
- Inner
- Blade size
- 157 × 150 mm
- Handle types
- FL · AN · ST · CS
- Made in
- Not published
- Release year
- Not published
Metadata confidence: Partially resolved
Blade construction
Estimated5W+2 ZLF · Inner
7 plies · Limba surface · ZLF inner fibre · Ayous core · 5.3 mm total
One blade, drawn as technical linework at real shakehand proportions. The laminated edge along the crown and right rim exposes every ply boundary in the stack. Edge depth is illustrative because physical veneer thickness is not published.
Stack order · outer face to outer face
1 · Outer ply
Limba
2 · Medial ply
Spruce
3 · Fibre layer
ZLF
4 · Core
Ayous
5 · Fibre layer
ZLF
6 · Medial ply
Spruce
7 · Outer ply
Limba
Limba
Outer ply · layers 1 and 7
Softer touch · Longer dwell
Spruce
Medial ply · layers 2 and 6
Fast energy return · Clear feedback
ZLF
Fibre layer · layers 3 and 5
Keeps the flex · Larger sweet spot
Ayous
Core · layer 4
Lower weight · Wider sweet spot
Stack order — face A to face B
- 01LimbaOuter ply
Soft, open-grained outer veneer — long dwell, a wooden feel and easy spin on slow strokes.
- 02SpruceMedial ply
Stiff, resonant core wood — fast energy return with a clear, high-pitched feedback.
- 03ZLFFibre layer
Pure zylon fibre — light reinforcement that keeps flex and feel while widening the sweet spot.
- 04Ayous — coreCore
Very light medial or core wood — keeps the blade low in weight and widens the sweet spot.
- 05ZLFFibre layer
Pure zylon fibre — light reinforcement that keeps flex and feel while widening the sweet spot.
- 06SpruceMedial ply
Stiff, resonant core wood — fast energy return with a clear, high-pitched feedback.
- 07LimbaOuter ply
Soft, open-grained outer veneer — long dwell, a wooden feel and easy spin on slow strokes.
Partially resolved · 7 of 7 plies with published material · stack order unconfirmed
About this blade
Butterfly Innerforce Layer ZLF is a 7-ply blade built around ZLF fibre placed inner, with Limba on the playing surface and a Ayous core. Limba in the outer layer: Soft, open-grained outer veneer — long dwell, a wooden feel and easy spin on slow strokes. Spruce in the medial layer: Stiff, resonant core wood — fast energy return with a clear, high-pitched feedback. Ayous in the core: Very light medial or core wood — keeps the blade low in weight and widens the sweet spot. ZLF in the fibre layer: Pure zylon fibre — light reinforcement that keeps flex and feel while widening the sweet spot. Physically it measures 5.3 mm thick, around 86 g. Butterfly positions it for off- play.
TTDNA ratings
NormalizedPerformance
Construction
Material properties
Playing profile
A TTDNA blade rating measures how much of the named characteristic a blade has. For descriptive rows — flex, stiffness, vibration, head heaviness, weight, thickness, carbon feel, softness, technique requirement, spin sensitivity — a higher number means more, not better.
TTDNA ratings are normalized comparison values, not laboratory measurements. They are built from published specifications, technical sources and structured product evidence, converted to one 0–100 scale. Where a directly comparable measurement is unavailable, the value is an evidence-based estimate. Overall-style scores are composites of several characteristics. Methodology