The Crumpler School Hymn Laptop Bag, Large (Black with Grey Accent) is a lightly padded sleeve made to carry most Apple MacBook Pro or PowerBook 17″ notebook computers. It has a soft, 1.2 mm PVC outer shell, light-foam padded, hard plastic, central-layer, light foam inner padding and brushed nylon lining. There is a self-healing medium size zipper with metal logo pull, internal PVC zip guard.