The ONE PIECE chair is the perfect chair for the demand-ing classroom environment due to its ultra-strong, tamper proof, one piece polypropylene construction. It is available in 5 sizes for ail âge groups and in a wide variety of colours. The ONE PIECE polypropylene chair conforms to EN 1729 parts 1 & 2 certification for strength, stability and ergo-nomics for educational furniture. Its one piece design re-moves the need for main-tenance and ensures there are no pinch points or Sharp edges to cause injuries.The ONE PIECE is also available in the anti microbial version ONE PIECE Plus.