Reusable heat support that maintains a temperature of approximately 50°C. - Product Name: Warm G - Temperature: Approximately 50°C - Size: M - Reusable: Yes - How to Use: Heats up in about 10 seconds Thank you for viewing. Just press to get warm! No batteries needed! Reusable! Heats up in about 10 seconds! Lasts for about 60 minutes! Recommended for fishing, winter walks, jogging, going out in cold weather, winter gardening, travel, outdoor events, outdoor activities, and work in cold places!