I recently purchased the Sensory Reflective Colour Mystery Balls for my 4-year-old son, who has sensory processing disorder. I was looking for a toy that would engage him and help develop his sensory skills, and I am happy to say that these balls have exceeded my expectations. The reflective and colorful design of the balls is visually stimulating and my son loves touching and feeling the different textures. The mystery aspect of the balls, where the color and texture are unknown until touched, adds an element of surprise and excitement to playtime. It's also a great way to help my son work on his tactile defensiveness, as he is learning to tolerate different textures and sensations. The Sensory Reflective Colour Mystery Balls have become a staple in our daily playtime routine, and I love that they are both fun and educational. My son is learning about colors, textures, and cause and effect in a way that is engaging and enjoyable for him. Overall, I highly recommend the Sensory Reflective Colour Mystery Balls to anyone looking for a quality sensory toy for their child. As a parent of a child with sensory processing disorder, I can say that these balls have made a positive impact on my son's development and playtime experience.