To obtain a protective layer especially an anti-vandalism protective layer which is provided with satisfactory workability, high pierce-resisting, high cut-resisting and little injury-risk, and which realizes production and working at an advantageous cost as the result.

The layer comprises a cover layer, a knit product made of cut-resisting fibers such as aromatic polyamide fibers and polyethylene fibers spun by a gel-spin process or glass fibers, a sheathed wire of a diameter of 0.1 to 2 mm contained in threads which protrude out of the plane of the knit product, and a fiber fleece layer combined with the cover layer with adhesion to another surface while sewing to at least one surface of the knit product.