Greatmats StayLock Modular Bump Top Tile 26 Pack (Light Gray) StayLock Connector design provides easy installation or relocation. Waterproof and resistant to most oils and acids. Durable, yet soft. Increase worker comfort with cushion fatigue benefits. Ideal for indoor industrial and athlethic locations. Sold in 26 packs, each tile measures 1x1 ft x 9/16 inches.