S-TR1 Air is the new sporty boot that combines the high TCX quality standards with maximum protection. Designed to protect the foot, ankle and shin, it offers a perfect balance of safety and comfort. Ventilation is optimized by the perforated upper and the front joint made of breathable mesh with integrated hotmelt bands to provide ideal comfort even in high temperatures. Front protection is guaranteed by the upper rigid TPU structure and the soft lower padding: The synergy of the innovative and functional design of the shin guard with the padding guarantees excellent flexibility of the boot. The movement of the joint is controlled by the TCS (Torsion Control System), specially designed to accompany the ankle in its optimal range of motion, avoiding unwanted twisting, overstretching and over-bending The Groundtrax® sole with specially designed tread ensures perfect grip on the pedals of the motorcycle and on the asphalt, in all weather conditions.