It has a unique double bungee suspension system locking mechanism that allows for an infinite number of recline positions and an adjustable headrest that can double as a lumbar support. Unlike other gravity chairs the original Chair boasts a 300 lb. weight capacity. Folded dimensions: 38.6" L X 26.4" W X 6.3" H. Open dimensions: 25.5" L X 45" W X 64.5" H.