Back support, the hi-viz offers optimal comfort and fit. Features 8 1/4" (21cm) wide powerful elastic back panel, breathable polypropylene mesh body, 4 super memory plastic stays and bright yellow sewn-on suspenders, 2 silicone "grip straps" inhibit riding up, stiffening mesh at abdominal closure reduces front rolling, hook and loop closure. Helps reduce costly back injuries and work days lost. Must call for pricing!