The Sync Wedge Chair is intended for use with any Endurance ' In Sync' Modular Series Chair to create flexible arrangements that allow for change over time. The ergonomic design provides maximum comfort using rotational molding technology. Rotationally molded design for increased strength. Constructed of high impact "no break" polyethylene. No steel or wood components. Integral plinth base for increased stability and floor mounting integrity. Sound dampening. Easy to clean, sanitize and maintain. Bolt to floor with optional bolt down kit. Can be easily filled with sand through optional ballast door on site to weigh down (Not included in this model). Secures with tamper resistant screws. Passes Flammability UL 94 HB. Tested to ISO 22196 showing a greater than 99% reduction in bacteria. Flame Retardant (passes Cal 133) test reports available upon request. Manufactured to ISO Quality Standards in the USA.