Recommended for use in the food industry with a traceable metal insert and bright blue color. Features: Consistent cellular structure for optimal expansion recovery time for a custom, uniform fit.Smooth closed cell outer layer that prevents debris build-up.Soft and comfortable PowerSoft foam supports all day comfort.Metal detectable (blue) recommended for use in the food industry.NRR 32 protection Specs: Food Pro Bullet-Metal Detectable-NRR 32 dB-W/ PowerSoft Technology PU Foam Offering Slower Expansion- 100 Pair per Dispenser Box Applications: Food Industry Laboratory Applications Canning and Recycling Catering Clean Room Pharmaceuticals Case Quantity: 1000 Case Length: 54.29 Case Width: 41.6 Case Height: 24.44