The aton q i size offers the latest safety technology available a base to fit the new i size regulation when installed with the base q i size the aton q i size complies with this new regulation you simply click the seat securely in place and no longer need to buckle it in using the car seat belt the aton q i size offers the latest and most advanced safety technology available a base to fit the new i size regulation i size ece r 129 is the new eu standard for increased child safety maki