Tyvek® is an extremely durable material, that offers a unique combination of strength and flexibility. Our Tyvek® cloth wings are used to repair and protect book spine edges, and are easily applied by just wrapping them around the cover, and tucking the excess on the inside of the covers. They don't need to be trimmed, and require complicated measuring to apply - just peel off the liner and stick them to your book hinge edge. Book wings offer an attractive and protective accessory to torn spines, or are used as a tear-prevention measure. You can buy Tyvek® cloth wings online at Binding101 in a selection of popular colors that are perfect for use with community libraries and universities.