Cushioned polyurethane TRUComfort‚ Insoles provide excellent arch support and a deep heel cup. The contoured design and closed heel ensure a secure fit. The Bistro is a strong choice for professionals who spend long hours on their feet thanks to our TRUBase‚ Outsole specially shaped for resilience and support. With proprietary PURGripÃ‚ technology, the treads are non-marking and provide proven slip-resistance on wet or oily surfaces. Comfort that works. Slip-resistant, oil-resistant, non-marking, shock absorbent, orthotic friendly, closed back.