Bakballs Manual Massage Balls are an affordable self-treatment device for back pain and stiffness. If you prefer a mild to moderate pressure in a massage or have a particularly tight back, are a bit more sensitive, or are in your older year. Designed by a sport physiotherapist to relieve pain and tightness in tense back, shoulders, ITBs and plantar fascia. It is Ideal to use at home or in the office.