Compatibility: Compatible with Chevy Silverado 1500 Crew Cab 1999-2006,Compatible with GMC Sierra 1500 Crew Cab 1999-2006 Excellent material: our cargo liners are made of durable and flexible TPE material, which can adapt to various weather conditions, not easy to break and durable. Fixed position: both the front and back of the cargo liner, we have made some non-slip granules and grooves, which will not slip off easily, you can step on it safely. Non-Slip: Floor Mats have raised edges and deep grooves on the surface and grippy contacts on the backside, so they won't easily shift when attached to the vehicle, preventing Floor Mats from slipping and becoming dangerous. Use and Cleaning: When first used, the mats can be left in the sun for a day or folded several times in the opposite direction to restore their original shape and fit the vehicle better. To clean, simply remove the mat and rinse with water or wipe with a rag to restore cleanliness. Cargo Liners, Compatible with Chevy Silverado/GMC Sierra 1500 Crew Cab 1999-2006 Floor Liners, 1st & 2nd Row Black, 3PCS Interior Accessories