The WeatherTech Classic Premium Rubber Floor Mats are made out of natural heavy-duty rubber. These all-weather mats have deeply sculpted channels designed to trap water, road salt, mud and sand. Made of up to 16 lbs. of pliable natural rubber, these mats won't curl, crack or harden in sub-zero weather. Our Classic mats also have anti-skid ridges to prevent shifting in your vehicle and come with a protective, non-stick finish to make cleanup quick and easy.