Top 10 Best Seller! Mirrors are an important furnishing in an Early Learning environment because they help to build a young child's self-awareness, self-esteem, curiosity, and emotional and cognitive development. Our popular and economical square mirror is constructed in safe, shatterproof acrylic and the edges and corners have been rounded for additional safety. Wall mounting screws included. Need a larger size? Check out our WB6648 Rectangle Mirror [sold separately].