Seating - Sync Cube with Ballast Door, Midnight Blue : The Sync Cube features a durable, one piece, 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. Raised edge for easy clean up. Sound dampening. Easy to clean, sanitize and maintain. Bolt to the floor via concealed pilot holes with hardware of your choice. Can be filled with sand through optional ballast door to weigh down (Not included in this model). 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.