Outdoor living at its finest! This Grandpa Swing is made from weather resistant Poly Lumber and features rounded arm rests. Easily hangs on any porch with a roof A-Frame, Pergola, or Arbor! Poly Lumber is recylced high density plastic that is envinronmentally friendly, weather resistant, and has high color stability for reduced color fading. Each piece of Poly Lumber is colored the whole way through, not just dyed on the outside.