Rich in texture, this mat's classic basketweave takes inspiration from oysters in its tonal array of pale greys, cream and taupe. Each mat is woven of PVC yarns treated with TerraStrand, a proprietary compound that's phthalate-free and contains renewable vegetable compounds that replace petroleum-based plasticizers used to soften yarns. Microban antimicrobial protection shields the rug against bacteria, mold and mildew that cause stains and odors.