It is made of soft material. Squeeze it, it will change to grape. The balls are useful in the relief of stress, do it to help relieve strained. Squish your stress, anxiety, and tension with these squishy stress balls that offer colorful, squishable fun. Very good pressure release appliance for office or home, Also can be used as a toy for fun. Perfect gift for your friends, its fans or yourself to relax. Package: 1ball (Random color)