Pro-Edge® By Liftex®. Premium Edge for Longest Life. 1) Twisted tire cord edge yarns provide superior cut & abrasion resistance - the resistance is structural and can't "wear off" over time & use. 2) PVC "Pocket Tag" for maximum tag durability and legibility - all info is laser printed, including unique serial number on each unit. 3) Superior cut & abrasion resistance, maximum tag durability and legibility - this combination means longer sling life, increased safety and lower cost per use.