Cockpit Coaming Bolster Set (2) - 4' x 39' & 20mm Thick - Black with Brushed Texture SeaDek Coaming Bolsters are a great alternative to traditional upholstered bolsters. Durable and easy to install, these bolsters will provide years of trouble-free service thanks to their closed-cell PE/EVA foam construction and robust pressure-sensitive adhesive. Each set contains two 4” x 39” bolsters that are 20mm thick. Specifications: * Dimensions: 4″ x 39″ * Material Thickness: 20mm * Texture: Brushed * Color: Black * Set of Two (2) *Two coaming bolsters are included in this set