2 Pack MSG Peanut Spiky Massage Ball for Feet and Hands Best for Plantar Fasciitis Treatment Gentle and Comfortable Massage - UNIQUE DESIGN PEANUT BALL - Unique shape allows the roller to effectively fit into the arch, and the raised surface dots provide a kneading effect for extra relief. The soothing stimulation immediately relaxes muscles and eases tension. Best for Plantar Fasciitis Treatment with Reflexology, Acupressure. We have updated the hardness of both green and blue balls, IF YOU WANT HARDER ONE CHOOSE GREEN. - 100% NATURAL RUBBER - The peanuts massage roller ball is made from 100% high density NATURAL rubber. Unlike other massage balls that use synthetic rubber, these balls are eco-friendly and non-toxic.You can feel free to use it. - AIRFILLED - Airfilled Massage ball brings gentle massage feeling, Great for recovery. - RECOMMENDED BY SPECIALIST - Recommended by Physical Therapists, Massage Therapists Podiatrists and Doctor. - PERFECT SIZE - Size:2.8*6 inch, Relaxing, energizing, and stimulating ! Increases blood flow to promote healing. - MASSAGE ANYWHERE - It makes entire body feel good with goosebumps: Increases blood flow to promote healing / Improved circulation / Increased energy levels / Deep sense of relaxation / Help foot injury recovery.