these hot rice bags are excellent for sore aching muscles from working as a hard labour job, or for lower back pain for those of us who have to sit a lot at our daily jobs.Or for that time of the month for our lady costumers. Heat a bag up and place it anywhere you feel the pain. Rice bag will mould to the area and soothe the area. A hot rice bag will also help those people who sit all day at a desk job or those people that sit driving a vehicle for an entire shift. Let us face it when you sit all day, even thought you take breaks often and move around you still get sore and achy in the lower back region because our bodies were not meant to handle that type of prolonged activity. A hot bag is before because it will mould to that section as you sit and continue to work.