These are slow rising stress balls. The difference between the old sensory stress balls them is that when you squeeze them, they will change the color. These stress balls are soft, but they will not stick your hands. Squeezing these stress balls is not only fun, but also for relief. So these squish balls are quiet fidget toys in offices and classrooms. The fidget squishy balls are also the most suitable choice for kid’s party favors and stocking stuffers.