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.
Intensity of usage Training and racing Terrain Road Anatomical fit Standard fit Road biomechanical fit Balanced transition Lacing system Regular laces Heel stack height (mm) 28 Drop (mm) 8 Forefoot stack height (mm) 20 Weight (g) 257 Intensity of usage Training and racing Terrain Road Anatomical fit Standard fit Road biomechanical fit Balanced transition Lacing system Regular laces Heel stack height (mm) 28 Drop (mm) 8 Forefoot stack height (mm) 20 Weight (g) 257
