4 years & up. Perfect for those working with children who have sensory processing disorder (SPD), this set has everything you need to understand and support children with SPD as well as build a sensory-friendly environment for all children. The set features "Wired Differently: A Teacher's Guide to Understanding Sensory Processing Challenges," a 2.5 pound weighted lapdog, three textured fidgets, four liquid visual timers, flexible wiggle seats, mindfulness activity cards, and more! Chair pictured in image is not included. Contents may vary.