The TRUBase Outsoles with PURGrip treads mean the Joplin is also slip-resistant, lightweight and shaped for stability and support. The polyurethane TRUComfort Insoles cushioning and arch support reduce foot pain and fatigue. Now you can get a comfortable, quality shoe for specialized jobsites. Protection from static buildup in the workplace. Slip-resistant, oil-resistant, non-marking, shock absorbent, orthotic friendly, closed back.