US Design Patented Made of dual coated 24oz marine grade vinyl, heavy duty aluminum powder coated frames, and comes with stainless steel clamps for easy installation and great durability Pre-assembled horizontal crossbars offer support and conveniently fold up with the cover providing full bed access Easy No-Drilling installation with the provided instruction and hardware; (Small holes will need to be cut for vehicle equipped with Over-the-Bedrail bed liner to secure the clamps; Works with Under-the-Bedrail bed liner without modification) TYGER Limited Lifetime ! (Please measure your truck bed size before ordering; We accept returns, however customer will assume the return shipping cost if ordered wrong).Does not fit Dually model