Crampon Review & Comparison: Petzl Vasak Lever Lock, old vs new — Chris Ensoll Mountain Guide
Petzl Dart LeverLock FIL Crampon - Rock+Run
Petzl Irvis Hybrid Crampons with Steel Front Section and Aluminium Heel Universal Leverlock System, for Ski Touring and Glacier Travel, One Size : Amazon.co.uk: Sports & Outdoors