Pro-Edge® is 50% tougher than standard webbing. The edges are made with high tenacity twisted tire-cord yarns. It is a scientific fact that twisted yarns are more resistant to cutting and abrasion than untwisted yarns. Since these twists are part of the yarn construction, the cut and resistance properties of the yarn will not go away after standard wear. Pro-Edge® maintains its strength far longer than most other webbings. Polyester standard. Nylon available - contact us for pricing. All slings are measured end to end including eyes and/or hardware. FOB Shipping Point. Reversed Eye Slings - Extra-wear fabric adds strength and durability. Resists abrasion and penetration. Designed for those tough jobs. Note: for slings over 3', order the 3' base item and then order item again choosing the option for "Adder per Ft." and enter the number of feet over 3' that you want.