Chattanooga original hydrocollator moist heat therapy hotpac, standard, 10 inch x 18 inch benefits of moist heat therapy over dry heat are well established for pain Relief due to arthritis, myofibrosis, back pain, Muscle strains and spasms. Trusted by physiotherapists, physicians, chiropractors, athletic Trainers and kinesiology for over 60 years. Each all-natural hotpac contains bentonite, a natural Hydrocolloid filling, and is wrapped in a woven cotton blend. Delivers up to 30 minutes of deep, Soo