Pivot lever.
Removable square tapered legs made of solid rubber wood, painted in espresso color.
Loose pillows.
The pillows are wrapped in polyester for added resilience.
Curved, anti-sag steel springs provide shock-absorbing support.
The corner frame provides exceptional structural integrity.
Adjustable feet provide stability on uneven floors.

Link to seller: https://www.potterybarn.com/products/buchanan-upholstered-sofa-collection/?cm_sp=ossa-18678_bestseller_variant