FIRA International Tested by FIRA International Ltd to comply with the ergonomic requirements set out in European Health and Safety Legislation: EN ISO 9241-5. Tri-Tachment™ System Tri-Tachment™ system ensures stability and eliminates the need for readjustment. Microban® Anti-bacterial Protection Built in Microban® protection fights the growth of harmful bacteria for the lifetime of the product. Foam Promotes neutral posture for enhanced comfort and support.