Anigan Reusable 6 pack Heart Shape Instant 4"X3.25" Hand Warmers (Newly Launched) 6 Ready-to-go, instant, and reusable instant heat pads. Just flex the metal chip within, and the insides will immediately crystallize, making the gel hot. Great for soothing cramp during your menstrual cycle. Great for warming your hands during cold seasons! High quality, with beautiful soft pink and silver sparkles.