Stress Ball by Makiko Yoshida
These unique stress balls were created by Japanese design student, Makiko Yoshida. The faces in the series of four are meant to represent the different faces (not phases) of the moon, and are made of an extremely pliable polyurethane resin. The soft-heads can be squeezed, squashed, squished and mashed for stress relief throughout your busy day, or just for the fun of seeing the individual expressions change.
Available in four expressions (from left to right): frowning, amazed, yawning, smiling