The High-back Navistyle(TM) Seating System is a perfect blend of ergonomic craftsmanship and smooth functionality. Subtle curves provide lumbar support while the tapered sides allow for the lateral movements desired by active users. The Navistyle(TM) also features our exclusive "no-pinch" hinge, with automatic locking mechanism that secures the seat in the folded position. The High Back Navistyle(TM) dimensions are 21 3/4" H x 18" W x 19 A 1/2" D. All Tempress Seats will mount to any seat swivel or slide with the built in Stainless Steel T-Nuts, and included Stainless Steel mounting hardware.