Wearwell PVC 497 Smart Diamond-Plate Medium Duty Anti-Fatigue Mat, Tapered Edges, for Dry Areas, 3' Width x 5' Length x 5/8" Thickness, Black "Good" sponge base Up to 80% recycled content Economical Temperature range: -10 to 120F Economical and 'green' solution 100% recycled urethane sponge Diamond-Plate surface Comfortable and functional in dry industrial applications Two thicknesses: 1-Inch and 1/2-Inch