Our Firm and Very Firm balls are unique, designed with the size of a baseball and with a firmness somewhat harder than the palm of your hand (Firm) and similar to your therapists elbow (Very Firm). They're made from a special polyurethane that has good grip characteristics so they will remain in place where you want them. Excellent for self-myofascial release which is highly effective for treating tendinitis and other chronic muscle and tendon pain including RSI, tennis elbow and plantar fasciitis. You'll find free online instructional videos on our website demonstrating their use with our other tools for guiding massage balls. Watch them and learn to do your own trigger point therapy, acupressure and deep tissue self-massage. These myofascial release balls make great gifts for your athlete / yoga friends or anyone looking for an extra firm massage ball set. Get relief when you need it, not when your therapist has an opening... Deep Recovery (formerly Massage Track) is your ticket if you want to release tight muscles safely and easily using the same techniques employed by the best therapists and chiropractors.