White. 12″ L x 27″ W. 3/4″ Thickness. High density, UV-stabilized polyethylene. Special high friction surface in a diamond pattern finish prevents slipping and promotes drainage when wet. Saltwater resistant. Developed to withstand the harshest marine conditions. Passes ASTM D2047 slip resistant testing. Resists most stains and does not change color. Does not rot or delaminate. Does not need refinishing. Chemical resistant. Cleans easily with marine-grade soaps or cleaners using fresh water.