Disposable heat packs that provide sustained high heat, offering warmth for approximately 8 hours. - Quantity: 10 pieces - Product Name: Haru Magma Kairo (Stick-on Magma Heat Pack) - Temperature: 55-56 degrees Celsius - Duration of Use: Approximately 8 hours Instant purchase OK! Will be shipped via Nekopos (a Japanese postal service). Keywords: Disposable heat pack, stick-on, magma, hot, 210