3M(TM) Safety-Walk(TM) Medium Resilient Tread 370, Gray Roll, 1 in x 60 ft, 4 per case 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. Gray. Available in custom sizes and colors, and with custom adhesives.