Features: Keychain design: The inspirational stress balls are lightweight and compact, can serve well as keychains to collect and organize your keys and small pendants. You can easily carry them with you, and play them while working, studying, meeting or watching TV. As Encouraging Gifts: You can share the anger management stress balls with teachers, students, office workers, artists, and those who suffer from stress, giving them strength and courage, and providing them a fun and cheerful way to chill. Specifications: Material: PU foaming material Color: rose red, light green, red, blue, green, white, purple, pink, orange, yellow Size: as pictures shown Package includes: 20 x Star shaped stress relief balls Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Small items, please keep away from children.