Our sensory brush has slightly softer nylon pins than the Original Happy Hair Brush™. We've made them this way as we've found people with ADHD, Sensory, Autism, Non-Verbal kids and adults find the sensory brush less scratchy. If you have thick hair, this brush wont cut the mustard. Great for sonsory people and also great for thin hair, older people and sensitive people with thin hair. The brush still incorporates a mix of 5 different hairbrushes and combs styles into one. It has a curved, solid (non-flexible) head so that it can deal with the toughest of hair while protecting the most sensitive of heads. We know your sensory loved ones will love it.