These masterplast self adhesive heat pads provide temporary relief from minor aches and pains of muscles and joints and will also alleviate pains such as backache, arthritis, strains, bruises and sprains. Each one is individually wrapped and easy to use, just apply to clothing or underwear. Lasts for up to 8 hours. Heat up to 57 degrees c. Works instantly. Fragrance free. Twin pack. 10 x 13cm.