When the environmental risks associated with fiberglass production became more widely understood, the decision was made to discontinue fiberglass shell production until a more suitable material could be found. In 2004, reintroduced the Molded Plastic Chair in polypropylene. In addition to being 100 percent recyclable, the polypropylene shell chair's subtle matte texture offers a soft tactility as well as notable durability. The chairs are available in both the arm and side chair formats in five archival colors, nine new colors, and with upholstery. They can be configured with a choice of wire, dowel leg, stacking, rocker.