The updated SONIC 4 BALANCE W is designed to be as springy as it is cushioned. Weโve kept our Optivibeโข cushioning to dampen uncomfortable vibrations without sacrificing energy return, so you get a really responsive ride. Now with a softer mesh and inner booty construction, this shoe is revving to go the extra mile.
Reduce vibrations
Optivibeโข cushioning helps limit vibrations with the aim of decreasing muscle fatigue, while continuing to deliver a responsive ride.
Responsive ride
Delivers that bouncy, springy feeling each time you push off the ground.
Balanced transition
The Geometric Decouplingโข axis is centered to deliver a balanced, effortless forward transition from contact to propulsion.
Details:
- Inlay sole: Textile
- Lining: Textileย MCL
- Outsole: Rubber
- Upper: Textile / Synthetic
- Heel stack height: 28 mm
- Drop: 8 in mm
- Forefoot stack height: 20 mm
- Weight: 213 g
- Intensity of usage: Training and racing
- Lacing system: Regular laces
- Anatomical fit: Standard fit




















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