"The SeaDek Coaming Bolsters 2-Piece Set serves up a superior alternative to traditional upholstered bolsters. Made from closed-cell PE/EVA foam, these coaming bolsters have naturally water-resistant qualities and will not crack, tear, or fade in the sun. Made from 20mm-thick material, these SeaDek bolsters provide durability and comfort to your boat's gunwales. Unlike coated upholstery, SeaDek material resists dirt and grime on the surface. Pressure-sensitive acrylic-based adhesive allows incredibly easy installation. Simply clean your boat well before installing, peel back the paper liner, and stick. These marine bolsters add extra protection to your hull's interior walls while doubling as a more comfortable brace point for your knees. Reel in that next big fish with confidence with SeaDek Coaming Bolsters. 39""L x 4""W. Ultra-durable closed-cell PV/EVA foam construction Naturally water-repellent Resists surface dirt and grime Easy installation with pressure-sensitive acrylic-based adhesive Gets softer under sun for even more comfortable feel"