Seat roll premio is the worlds first on bike storage solution powered by the boa closure system the foundation of the premio seat roll 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 seat roll premio attaches effortlessly to your seat rails using the beautiful boa closure system allowing for a lighter weight more durable more powerful and more adjustabl