HDPE
High-density polyethylene: the plastic milk jugs are made of, and the material of our chair.
HDPE is the number-2 recyclable plastic — milk jugs, detergent bottles, cutting boards. It is tough, slightly waxy, and absorbs essentially no water, which is why it makes sense outdoors. Recycled, melted, pigmented and extruded into boards, it becomes poly lumber. The material, in full.