Built for long shifts, the ShiftRunner combines fluid resistance, slip-resistant Duratread traction, EH‑rated protection and lightweight cushioning from 4LR technology and FLX Foam. Lace-up style 4LR™ technology provides lightweight support and stability Lightweight FLX Foam™ midsole provides responsive cushioning and lasting comfort with every step Slip-resisting Duratread™ sole combines durability with flexibility, engineered for long-lasting performance Cushioned footbed Mesh upper/textile lining/synthetic sole Imported