.04 Stretcher The Vitra .04 Stretcher beam seating system structurally motivated and reduced to its essential form. Add to Favorites Add to Binder Request a Quote Download PDF Manufacturer Vitra Designer Maarten Van Severen Year Designed 2000 Specified Finish Batch-dyed, integral polyurethane foam with encased steel frame; flexible backrest with integrated leaf springs. The great comfort of these objects is revealed upon use. It is achieved by the intelligent employment of materials: the flexible integral foam used for the backrest, seat and reclining surfaces yields gently to the sitter’s weight and adapts to body contours, thereby making additional padding unnecessary. Structural elements are made of metal, providing stability and support.