Why let a few dark clouds spoil a hard training session or gentle outing? The SONIC 4 GORE-TEX features an innovative stretch bootie construction with the latest Gore-Tex membrane. Simply slip it on and head out to play. Optivibe™ cushioning dampens vibrations without sacrificing energy return, so your ride is responsive - whatever the weather.
Be ready for any weather with a really stretchy, really waterproof GORE-TEX bootie to keep the elements at bay.
Optivibe™ cushioning helps limit vibrations to minimize muscle fatigue and maximize energy return.
Enjoy that bouncy, springy feeling each time you push off the ground.
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.
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