Anti-slip, long life and requires very little maintenance. Door Mat Model NO.: WP-30Use: Wet AreasFeature: Wear-resistantMaterial: Recycle RubberDiminsion24"*36" 36"*36" 12inchs Interlocking Style Rubber Mats, they made by the rubber granule(which comes from the waste tyre) than thay are very environmental friend. Charactor: Flexiblity, strong, absorb shake, colorful, anti-slip, etc