These are Fiberglass Arm Shells, originally designed by Ray and Charles Eames for Herman Miller in 1950. These particular examples were produced in the 1960s. They are parchment fiberglass. These shells are sold without bases. The listed price includes one shell and we have 45 available to purchase. Each shell measures 23.5 inches deep, 24.875 inches wide, and 13.5 inches high. None of the shells are in perfect condition, most are in good shape without cracks or damage, which we will clean as diligently as we can prior to shipping. Please inquire if interested in larger sets. They were originally on Tandem benches, which we still have the parts for. Please see photos for condition of the shells.