The balls are made out of urethane resin to provide a soft, pliable feel, and are shaped into faces with one of four expressions-laughing, crying, smiling, and yawning. By prodding, pulling, and squeezing the balls, users can create their own expressions, making them excellent company whether you're in a laughing mood or a crying one.
另外如可以手動操作的「丸顏阿骨打」系列，外型是一個可以捏出微笑、哭泣、憤恨等各種表情的人頭，再藉由聚胺脂樹脂柔軟有彈性又耐捏的手感，讓使用者可自由創作各種表情，陪著自己一起笑，一起哭。