· Relieve Stress: bike chain fidget toy can effectively reduce stress and anxiety, improve concentration, and help people with autism and ADHD; In addition, it can also promote blood circulation in the hands and improve finger flexibility.

· Quality Material: the fidget roller is made of stainless steel and silicone, which is strong and wear resistant, not easy to corrode or fade, and can be applied for a long time; Its smooth surface will not scratch your hands, making it a good choice for stress relief anytime, anywhere.

· Appropriate Dimension: 5*3cm/1.95*1.15inch,Color: red, yellow, black.

· NO NOISE GENERATED: Key ring shape quite smooth design, you can play it in classroom, meeting, office, airplanes, waiting bus and will not get others attention.

· Wide Range of Applications: quiet fidget toys can be shared as delicate and practical gifts to friend, family, student, office worker and other people who are stressed and socially stressed.