Durable material: these infinite cubes are made of safe and friendly materials, which can relieve stress and increase concentration: They are great toy for those with ADD, ADHD, autism or anxiety, and are ideal for students, office workers and daily irritable people Size: the size of the infinite cube is 80 x 40 x 20 mm/ 3.15 x 1.57 x 0.79 inch (L x W x H), fits right in your pocket, allowing you to easily carry it wherever you go, take it out, and have fun anytime Package include: you will get 6 pieces infinite cube of different colors, starry sky blue, starry sky purple, black, white, blue, pink, which will help people of most ages to reduce stress and anxiety, very suitable for offices, schools, cars, airplane or any place where you need to calm yourself Classic design: infinite cube is ideal for people trying to quite nail biting, smoking, leg shaking and most type ofAttention disorder issues, good shape design for hand comfort and long term usageCC Suitable occasions: no matter