3M(TM) Safety-Walk(TM) Medium Resilient Tread 310, Black Roll, 48 in x 60 ft, 1 per case Features a resilient, non-mineral, slip-resistant material. Black, 48 in X 60 ft, 1 per case. Features a resilient, non-mineral, slip-resistant material. Soft surface is suitable for bare feet. For locker rooms and recreational/athletic equipment, boats and docks, interior stairwells, entryways and lobbies. Available in custom sizes and colors, and with custom adhesives.