Our Recycled Plastic Adirondacks are made from high-density polyethylene (HDPE) were the primary raw material is derived from post-consumer bottle waste, such as milk and detergent bottles. The HDPE is cleaned using a thorough decontamination process and combined with a UV-inhibited pigment system resulting in a finished product containing over 90% recycled plastic by weight. Stainless steel fittings help to ensure longevity season after season.