Bring relief to your back with the microwaveable back warmer! The back warmer works as a belt to wrap around your midsection with a velcro fastener to keep it secure inside the wrap is an inner back filled with seeds that can be heated up in the microwave the heat provides great relief for a stiff or sore back and with the added infusion of lavender, sweet orange and geranium oils you get an added benefit of aroma therapy don't worry, if you want it cold instead of hot just stick it in the fridge!