Constructed of thermoplastic-injected resin reinforced with carbon fiber, the Stand21 Club III combines excellent protection in a lightweight, affordable package. The Club III uses a proprietary honeycomb architecture not found in other devices at this price point. The result is a superior strength to weight ratio. The self-neutralizing, floating single-tether design allows for maximum mobility while providing a high level of protection at multiple angles. The Club III is both FIA 8858-2010 Homologated and manufacture certified to SFI 38.1, making the device suitable for use in most series around the world. * Note to users of Hans® devices: If replacing one of these devices that originally used spring-post anchors, you will not need to purchase new posts as the tether anchors of the Club III are compatible. For all other users, you will need to purchase compatible spring-posts for use with the Club III. Please contact Sparco customer service desk for more information. TECHNOLOGY • FIA 8858-2010 Homologated and manufacture certified to SFI 38.1 • Construction – Carbon Fiber infused thermoplastic injected resin • Lightweight – Large is only 1lb. 7oz. (640 grams) • Exceptional ergonomics and comfort • Self-neutralizing single tether for maximum mobility • Carry bag & clavicle padding included • 20° Angle for use with most seatback angles • Made in France • Compatible with Hans® spring-post anchors (Not included) • Compatible with spring-post anchors that come pre-installed on FIA 8858-2015 helmets Available in Medium or Large Medium: neck circumference of 15"-18" Large: neck circumference over 18"