From - DaTong Tech

3M Tape : 

3M™ Safety-Walk™ General Purpose Tread 610

Safety-Walk Antislip mats and materials from 3M provide slip resistant surfaces to stand on. Can be used in slippery areas such as tubs and bathroom floors.

Buy 3M safety tread in conformable, resilient, recreational and heavy duty varieties. Create safe walkways, stairways, boat decks and outdoor surfaces. Safety tread conforms to irregular surfaces and edges. Safety-Walk tub and shower strip creates a safety grip for moisture-prone and barefoot traffic areas like showers, tubs and bathroom floors.

3M Anti Slip Tape

3M #610

2 inch X 60 ft, 30.00 USD/roll