The updated SONIC 4 BALANCE W 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.
Inlay sole : Textile Lining : Textile Outsole : Rubber Upper : Textile / Synthetic Drop : 8 in mm Heel stack height : 28 mm Forefoot stack height : 20 mm Weight : 213 g Lacing system : Regular laces Intensity of usage : Training and racing
