Ja-Ru's Bop Buddy Squishy Balls are made of quality materials which are properly tested for the safety and enjoyment of your children. Fun fidget toys which can also help you relieve stress and pain caused by carpal tunnel syndrome. Feel more productive, relaxed, and confident. Light weight and easy to carry. Bring anywhere, home, office, outside or in even in the car. Cool Party Favors. Vibrant and colorful ball toys can easily catch children's attention at your party! Enough stress balls as a squishy party favor for sharing and bringing happy time. Besides, these kids' stress balls are good to return gifts for kids' birthdays or as classroom prizes, or as goodie bag stuffers.