Come and see our amazing products. You can squeeze or slide the marble forth and back, bend it, fold it, soothe fidgety fingers and help relieve stress, calm nerves. Break old bad habits by keeping your fingers busy to stop nail picking and biting, and prevent new ones from forming. Recommended by teachers, parents and therapists. Have been proven to relieve stress and stay focused, helped special needs with ADHD ADD OCD and Autism. Pls confirm with us about the packing info, stock color and exact production time before placing your order.