Try walking behind occupied (or even unoccupied) chairs.  It’s difficult enough when they’re on wheels and the occupant can slide forward — but with fixed seating?  Turner, designed by Lamm for Sedia Systems, maximizes space behind each seat for row easement access, solving this common design (and user) problem.   A multi-pivotal base swivels and tilts, enabling the pedestal mounted seat to tip forward so people can pass behind.  Swivel to sit, tilt to pass behind.

Turner. Designed by Lamm for Sedia Systems.

“Powder-coated 11 gauge metal components with ergonomically designed monolith seats”… I might consider going back to college for these.  In straight rows on tiered or flat floors, the chairs are meant to be used in combination with Sedia System’s multi-purpose tables: a 12-inch continuous writing surface with an integrated wire management system.  Not only are they far more comfortable than what I sat in at school, but they actually make it possible to escape to the bathroom or grab a drink without disrupting an entire lecture.