The X-IUM J CLASSIC is a high-performance junior classic boot designed for competitive junior racers. The Lock Down foot wrap, Dual Density heel support and asymmetrical lacing provides a precise, enveloped fit to deliver ultimate comfort and control. Specifications: - Weight: 1170g / pair- Fabrics_lining: Polyester - Lace cover: Pvc- Construction upper cuff: 3D injection High Cuff free support- Heel: External 3D plastic reinforcement