Glass Subway Tile Inverted 3D Metallic 2x6 was designed with the "out-of-square" mind. The three dimensional look comes from the inside out, working as a reverse bevel and making the front of the tile flat. This mosaic tile is made of one hundred percent premium clear glass. It is mesh mounted on a fiberglass sheet for an easy installation. Elevate the look of your kitchen backsplash, bathroom including shower walls, fireplace surrounds, and feature wall, with this subway mosaic tile.