WeatherTech Trim to Fit Front Rubber Mats for Select Ford Expedition Lincoln Navigator Models (Black) Deeply sculpted channels trap water, road salt, mud and sand Won't curl, crack or harden in sub-zero weather Have anti-skid ridges Made of 16 lbs. of pliable natural rubber, with anti-skid ridges to revent shifting Will not curl/crack/harden in sub-zero weather and holds up to 1 1/2 quarts of liquid without spilling