This Caomaru Face Anti-Stress Ball is one of the trend in Japan invented by a Japanese student. This is made of pliable polyurethane resin that enables it to be squished for numerous times. This is a fun way to remove stress while looking at Caomaru's facial expressions squished anyway you want. 1 Set Contains 4 Expressions. The expressions itself are funny. Popular with work or study pressure. Suitable gift for friends. A very special stress remover toys. Caomaru faces hope to bring a good laugh to all of your friends, eliminate all kinds of stress in life, and be more confident in life every day.