Non Skid Laminate. Sup Carrier Kit: Includes: 2 Universal Sup/Sot Non Skid Foam Blocks 2 Sup Stacker Blocks 2 9* Block Straps 2 15* Center Straps With Cam Buckle. Sup/Sot Universal Block: 3.75in H X 4.75in D X 31.5in W Sup Stacker Block: 1.25in H X 4.75in D X 23.25in Wtable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }