1.Double wall covers protects load yarns. 2.Low strain, wear-resistant, long-life material(100% EPS) . All YI-LIFTflat wdbbing slings meet or exceed current U.S.. industry and government requirements of OSHA and ASME B 30.9 , and can be modified according to local standard as required.Double wall covers protects load yarns.Color coded to indicate capacity.Printed on capacities for additional ...