Package Count: 24.
When you squeeze this pack, magnesium sulphate dissolves into water, causing the magnesium sulfate to release a large amount of heat (up to 122? F). Dynarex’s instant hot pack provides soothing warmth which really helps neck pain, arthritis, back and shoulder injuries, muscle strains, aches, muscle tension and cramps.
Single squeeze allows for easy application of hot pack, offering immediate relief to injured area Flexible material conforms to body contours Instant hot pack provides soothing warmth 5 x 9 inches
