The tCentric Hybrid’s emphasis on ergonomics is reinforced by the number of patented adjustment features built into its design not found anywhere else. Achieve the perfect seated posture with independent back angle adjustment, helping maintain a healthy, open stance between the upper body and thighs. Patent-pending Airless Cushion Technology™ works with the mesh to ensure the user never bottoms out or sinks too low into the mesh. It also reduces the pressure points under the thighs from the front edge of the seat frame.