The updated SONIC 4 BALANCE is designed to be as springy as it is cushioned. We’ve kept our Optivibe™ 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

Optivibe™ 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 Decoupling axis is centered to deliver a balanced, effortless forward transition from contact to propulsion.

Details:

• Inlay sole: Textile
• Lining: Textile
• Outsole: Rubber
• Upper: Textile / Synthetic
• Heel stack height: 28 mm
• Drop: 8 in mm
• Forefoot stack height: 20 mm
• Weight: 257 g
• Drop: Regular Drop (>=8)
• Intensity of usage: Training and racing
• Lacing system: Regular laces
• Anatomical fit: Standard fit
• Road biomechanical fit: Balanced transition