New Balance Sigma Harmony BOA
The BOA® Fit System delivers micro-adjustable precision fit, engineered to perform in the toughest conditions on the New Balance Sigma Harmony BOA track shoe with S3.
DIALED IN - Micro-adjustable, precision fit.
LOCKED IN - Connected fit locks in the heel for increased foot speed and improved stability.
CONFIDENT - Engineered and built to perform in the toughest conditions.