Mirra Chair Open Box - by Herman Miller - Fully Loaded Felt Green on Graphite No adjustment needed. The pliable, elastic TriFlex back supports the entire spine and conforms to size, posture, and movements. Easy motion. The Harmonic tilt creates pivot points at the hip, knee, and ankle to allow easy and natural movement. AireWeave suspension. This elastomeric suspension seat follows the contours of the body, distributes pressure evenly, and provides aeration. FlexFront seat edge. The sitter adjusts the seat depth without moving the seat pan; there's never a gap between the seat and backrest. Innovative look. Mirra has a clean, light-scaled design that reveals the chair's features and function.