The Grammer 90.6 seat is available with a swivel air option, allowing for flexible rotation to enhance ease of movement and positioning. Controlled armrests are available as an optional feature, providing adjustable support tailored to individual comfort needs. Additionally, the seat can be equipped with an integral lap sash seat belt as an option, offering added safety and security. This combination of ergonomic features and customization options makes the Grammer 90.6 a versatile seating solution.