Shop Nilight 2Inch Rise Threshold Ramp for Doorways, 19.7Inch Wide Low Profile Rubber Smooth Access Door Ramp for Doorway, Curb, Home Steps, Bathroom in high quality, support 2 year warranty. Made of natural rubber that withstands deformation, wear, and extreme temperatures. A slight rubber odor may be present initially but is harmless and will fade quickly. It is recommended to place it outdoors or in a a well-ventilated area before use to ensure maximum comfort.