The ONLY Dynamic Lanyard for Rope Access Workers that has a 3 Sigma strength rating of 5,000+ lbf. Tensile strength is tested when loaded end to end between 10mm pins. OSHA strength compliant. Manufactured from a special 10.5mm dynamic rope and stitched on computer controlled state of the art sewing equipment. As a result of our thirty years of sewing experience and our commitment to the finest quality and highest level of safety, we absolutely batch test each machine set up for ALL sewn products. Our comprehensive testing program insures our products meet the rated strength every time we manufacture each specific product. Manufactured in the U.S.A. from Domestic and Globally sourced raw materials.