unrivalled strength and durability; made from the strongest virgin materials available; REFLECTIVE PANEL - Class R1 high intensity reflective, 20% more reflectivity than standard lower grade reflective material; ANTI-TRIP FEET - Scalloped design to prevent accidents; SURELOCK™ Barrier connector clip - Can be connected on uneven ground i.e. kerbs and rough terrain; clever locking design maximises stability when stacked for storage/transporting correctly