Measure about 5.5 x 7.5 inches. Durable & Sturdy Material:  Waterproof rock slate, long shelf life, not easy to tear or wear. It can be resistant to UV and moisture, and can maintain color for a long time.Perfect Decor: These rock picture frames are ideal decor choice to remember your special memories in your life, suitable any style of decoration. Perfect for bars, cafes, office, living room, work room, dining room, bedroom, bathroom or bookshelf.