Dri-Dek offers the most effective antimicrobial agent available: EPA approved Oxy-B1 is deadly to fungus and bacteria because it suffocates them on contact. This unsurpassed protection is warranted for an amazing five years, and only Dri-Dek has it! The aggressive surface is slip-resistant in the wettest conditions, while its flexible construction affords easy rolling. Dri-Dek is offered in 12" x 12" x 9/16" interlocking tiles, sheets, and rolls in 12 brilliant colors. If a more rigid tile is required, choose Dri-Dek "HL" ( heavy load) offered in red, blue, black and gray only.