The new BAK Revolver X4s is the third generation of America's #1 selling premium hard rolling cover now with exciting new features. The Revolver X4s is a bed cover engineered for real-world durability. With NEW matte black heavy-duty aluminum slats wrapped in industrial-grade vinyl and a matte black finish top-to-bottom the X4s delivers a modern stylish appearance. With the cover closed the patented rotational locking system secures the X4s for the entire length of the bed on both sides providing unrivaled strength and security. When open the X4s cover rolls forward smoothly storing securely with a durable strap and buckle system. This design gives you full access to your truck bed and does not interfere with your rear view mirror sightlines or block the third brake light. With revised premium black aluminum slats newly designed side seals and finished rear corner caps the Revolver X4s bed cover achieves a new level of refinement for your truck. Best of all it's backed by an impressive 5-year warranty. Expect More.