These beautiful and nurturing Batik Hot/Cold herbal packs are wonderful gifts or for personal use that will bring you support for years to come. They are filled with flax seed and your choice of herbs and essential oils. The Tigers Blend is great for sore muscles/Headaches and BEST seller. More to choose from to aide in relaxation or to help have a restful sleep. You can remove the Batik cover to wash it in the washing machine.