The silca seat roll premio is built on a foundation of excellence the base of the seat roll premio is a waxed canvas of silcas own creation heavyweight cotton canvas is first hot melt waxed for water proofing and then computer quilted with reflective thread for improved visibility the silca seat roll premio attaches effortlessly to seat rails using the smart and sleek boareg closure system allowing for a lighter weight more powerful adjustable durable attachment to the s