The Adkins Lounge Chair features a sturdy polished aluminum disc base with a nylon ring to protect hard floors. It's frame is made using a lightweight Expanded Polystyrene and it has a green 100% polyester fabric upholstery. The unique frame material is more durable than wood and will not crack or warp over time like a wooden frame can. It's so sturdy that it has a 25 year manufacturer's warranty against defects in material and workmanship. This modern lounge chair has a removable seat cushion for easy cleaning and a swivel seat.