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.
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.
- 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
1. Place a sheet of paper on the floor and against a wall.
2. Make sure you are wearing the same socks that you would normally wear with this type of shoe.
3. Wearing these socks, stand on the sheet of paper with your foot perpendicular to the wall and your heel against the wall.
4. Then use a pen to draw a line just in front of your big toe. Repeat for both feet and take the longer distance to determine your size.
5. Using a ruler, measure the distance between the wall and the line you drew to find your size.
