Patent ID: 7931339

Claim:
A seat assembly for improving posture of a user, comprising: a base portion; a substantially rigid seat portion to provide proprioceptive feedback to said user, said seat portion supported by said base portion in a position angled downwardly from rear to front; a substantially vertical back support extending upwardly in a rear area of said seat portion, said substantially vertical back portion supported by at least one of said seat portion and said base portion; said seat portion comprising at least one aperture substantially centrally positioned between opposite lateral sides of said seat portion and defining multiple back support locations between said rear and said front of said seat portion; a pad positioned on said back support, said back support having a lower end passing through said at least one aperture and selectively positionable in one of said multiple back support locations for varying seat depth and said pad having a convex surface extending toward a user's back and convex about a vertical axis for engaging a user's thoracic spine area.