Easy Clean: Superior SFC slip-resistant outsole with our patented clog resistance built in. SPILL GUARD feature: A protective membrane lining that helps ward off liquids. Nano Composite Safety Toe: Lightweight and roomy Nano Composite Safety Toe (non-metallic, non-magnetic). Meets ASTM F-2413 standards bearing a class 75 rating. TRIPGUARD feature: Decreased trip hazard zone to allow fluid movement between slippery environments. Air cushion system provides lightweight, impact-absorbing comfort.