The Seascape M8240 6' Bench without arms and back has an aluminum frame with HDPE (high-density polyethylene) lumber for the seat. HDPE material is made from post-consumer bottle waste such as milk jugs and detergent bottles, making this an environmentally friendly product. The Seascape M8240 is a transitional design and can be surface mounted with an available mounting kit sold separately. Having no back, this bench offers seating access from both sides for more versatility. The frame is available in any Texacraft powder coat finish to coordinate with any one of 4 lumber colors to select from.