HAIX Trekker Pro 2.0 Safety Hiking Boots. HAIX® Climate System for improved airflow. HAIX® Vario Wide Fit System with adjustable fit options. :contentReference[oaicite:1]{index=1}. Certified toEN ISO 20345:2011 S3 HRO HI CI WR SRC standards, the Trekker Pro 2.0 combines professional safety features with all-terrain outdoor performance.
