US Patent 9414681 Flexible seating surface

A seat has a first ischial region, a second ischial region, a tailbone region and a thigh transitional region, each having at least one slot. Each slot generally opens outward, away from a center of the seat. Each slot may have an elongated central portion and two distal portions extending from the central portion. The central portion and distal portions may have a specific configuration relative to each other to provide desired support characteristics. The slots may allow flexing and cantilevering of portions of the seat to dynamically contour the seat based on the weight of the user.