Package Content: You Will Receive 30 Spiked Sensory Rings In Different Colors. You Can Choose The Color According To Your Personal Preference. material And Size: Made Of High-quality Stainless Steel, Anodized, Durable, Reusable, Rust-proof And Not Easy To Fade. Size: The Outer Diameter Of The Massage Ring Is About 2.5 Cm, And The Inner Diameter Is About 1.2 Cm, Suitable For Most People. function: These Massage Rings Can Reduce Anxiety, Relieve Stress, And Promote Blood Circulation In The Fingers To A Certain Extent. They Are Very Suitable For Students, Office Workers, Etc. scope Of Application: Shiatsu Ring Is Suitable For Adults, Teachers, Students, Therapists And People Who Use Computers For A Long Time; It Is Especially Suitable For Restless People Who Want To Relieve Stress. easy To Use: Wear The Massage Ring On Your Finger And Roll It Up And Down To Generate Pressure On The Finger To Realize The Finger Massage Function. Our Finger Roller Massager Is Flexible And Fits Most Finger Sizes. product a Pack Of 30 Spiked Sensory Rings, Spiked Ring/shiatsu Ring Set, Suitable For Teenagers, Adults, Silent Pressure Reducers And Massagers function: in Order To Apply Enough Pressure, Our Ring Is Slightly Smaller In Diameter Than Your Finger. These Finger Massage Rings Can Help Promote Blood Circulation In The Fingers, Reduce Stress/anxiety, Increase Concentration, Etc. The Massage Ring Is Very Small And Easy To Carry. specification: material: Stainless Steel. color: As Shown In The Picture. size: Approximately 2.5 Cm/0.98 Inch Diameter. package Includes: 30 Massage Rings. notes: small And Light Items, Not Suitable For Children Under 3 Years Old.