This Corelle Modern round 12-piece glass dinnerware set includes service for four with a clean, versatile design for everyday dining. Made with triple-layer Vitrelle' glass, it is lightweight, durable, dishwasher and microwave-safe for easy care. Use it for daily meals or casual entertaining. p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Calibri} Vitrelle glass is a special tempered glass consisting of three glass layers pressed together for a thin design with added strength.