DFPE570/URNU / E570/URNU RAINBOW LARGE/XLARGE MS MILLER DuraFlex® Stretchable Harness Feel the difference! Increase productivity and compliance with harnesses that fit comfortably. DuraFlex® harnesses are constructed of a blend of nylon, polyester and a specially formulated elastomer that stretches for a continually conforming fit with no bunching, binding or kinking. DuraFlex® harnesses increase mobility, decrease fatigue and are more likely to be worn correctly, increasing worker safety. Patterned upper webbing and solid leg straps make orienting and donning the harness easier. Webbing protected with Teflon® HT for longer performance life. Unlike natural rubber, the elastomer resists wear from the sun, heat and moisture. All harnesses meet ANSI and OSHA requirements. Universal size.