Features: These stretchy fidget toys are made of PU material, which are safe and durable, comfortable to touch, can serve you for a long time. These small ninja toys are brightly colored and very eye catching, suitable as birthday gifts, holiday gifts, classroom rewards, party favors for your students, family, friends or colleagues. Specifications: Material: PU Color: mainly red, blue, purple, white and green Size: Diameter: 2.36 inches/ 6 cm Package includes: 20 x Ninja stress balls Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays. Little ones should use our product under the supervision of adults. Small items are included, please keep them away from little ones in case of choking risk.