STK From the leader in truck bed innovation, the original Line-A-Bed bedliner is now better than ever. SR skid resistant technology helps keep loads secure and doesn't wear off like "scuffed" skid resistant surfaces used by other brand bedliners. Line-A-Bed SR is loaded with features and delivers superior truck bed protection at an affordable price. The Line-A-Bed SR bedliner is molded of durable, high density polyethylene to last as long as your truck. The high-ribbed floor pattern is designed to promote drainage and create additional cushioning against denting-a feature that you don't get with other types of bed protection. Features of Line-A-Bed SR: Lifetime Warranty Rich Black Finish True Customized Fit On Every Model Molded in Supports for Two-Tier Stacking SR Skid Resistant Surface Helps Keep Loads Secure Over-the-Rail: No assembly required. Just press six SnapFast clips into pre-slotted holes. Under-the-Rail: No hardware required. The liner snaps into place under the truck rails.