Large Kidney Warmer with Straps - Wheat Pack, Heat Bag, Thermal Pillow for Hot and Cold Therapy - Against Back Pain, Lumbago, Disc Problems - Filling: Purified Wheat Grains BLUE-WHITE

It gets cold after 5min, hardly used and the stitches already broke. Waste of money

Ok product, gets hot, but seems to cool quickly. Could be improved with a velcro/elasticated band instead of a waist tie. Being used for back ache.