Quantity: 2, Size: 10*7CM, Instant Heating Activation – The flexible heating plate instantly activates the heating function. The temperature will rise to 55 degrees Celsius. Heating time is approximately 40-60 minutes.These reusable hand warmers are ideal for cold winters, outdoor activities, and camping.Reusable – Simply boil gently in water for 5 minutes or until the crystals completely melt to reactivate. This reusable hand warmer is the perfect companion for keeping your hands warm. Wrapping it in a cloth or placing it in your pocket will extend the warmth.Safe and Natural Warming – Ingredients: Durable PVC bag, 12% distilled water, 88% sodium acetate, metal sheet – This product is a fun and helpful way to keep your hands warm this winter. Convenient to put in your pocket, but don't place it directly on your hands. Keep your hands warm during various activities in the cold outdoors.Note: When boiling, wrap with a towel or stir constantly. Do not allow the product to come into contact with the bottom of the pot, as this will damage it. WARNING! Do not microwave.Note: 1. Due to differences in monitor and lighting effects, the actual color may differ slightly from the image!2. Please allow a 1-3 cm deviation due to manual measurement!