Mini 1pc Mix design hot water bag for pain relief.6501 Mini 1pc Mix design hot water bag for pain relief. Description : Hot water bag is most ular in heat therapy treatment, and it can resist the hot water pressure comfortably. Treats muscular pain, back aches, muscle pull, arthritic, rheumatic pain, induces relaxation, releases stress instantly relieves joint pains, muscular cramps, menstrual pains & back aches. Both side ribbed made from good quality hot water bag. Easy to clean and keep water hot