Summer Glass Tile Iridescent Gray 2x3 is mesh backing on a 12 inches by 12 inches fiberglass sheet for an easy installation. Each individual tile chip is 6mm thick. Its iridescent finish reflects the light and create a focal point, providing a great design aesthetic. This mosaic tile is suitable for swimming pool, Jacuzzi, water feature, spas, kitchen backsplash, bathroom, shower walls, and fireplace surrounds.