Imprint Option: 2 Day Rush - A shining star in any promotion, our star shaped hot cold pack is not only aesthetically pleasing, but also extremely effective. Our packs can be used as both a hot and cold compress and are filled with vibrant color gel beads. Easy to use, this item moves seamlessly from freezer to microwave and can be used again and again. Our TekBeads are filled with a non-toxic, pliable blend of water and glycerin. Instructions for use are printed on the back of each item. Great for Nurse's Offices, workplaces, home, etc. Please note that the clear packs may have a yellow tint due to the temperature/chemical reaction.