Pro-E Sole represents the first-ever advancement in inline boot design to incorporate an "anatomically correct" sole into the bed of the foot. This evolutionary design is not your ordinary sole. Pro-E brings you a true contoured foot bed providing the comfort and support that your foot needs and deserves when under the stress and physical demands of skating. This is especialy true if you are skating for long periods at a time, frequently, or at a high level for extended periods. Pro-E relaxes the foot, allowing it to make more contact with the sole. This additional contact provides added support, stability and comfort. Pro-E will help to relieve shin pain, provide greater comfort during extended periods of skating and ultimately, may help to prolong your overall skating career. Pro-E Sole, just another way Luigino is driving innovation and bringing greater peace of mind.