Sievi Lazer Roller High+ S3 Ankle Boot – BOA® Fit, FlexEnergy®, PORON XRD® Ankle SupportThe Sievi Lazer Roller High+ ankle boot blends cutting edge comfort technology with serious protection, making it perfect for tough working conditions. The visible FlexEnergy element in the heel increases flexibility by storing and returning over 55% of energy with every step. The Sievi TractionPro friction sole ensures maximum grip, while PORON XRD ankle support moulds to your foot, providing stability and superior shock absorption. The BOA Fit
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