• Multifunctional heat bag suitable for microwave and freezer, ideal for cramps, muscle pain, back pain, shoulders, neck, and joint care. • Intelligent heat release with natural clay core and layered foam, more efficient than a hot water bottle. • Provides comfort for body and mind, relieving stress and reducing pain. • Eco-friendly, water waste-free, with natural clay core, recycled foam, and organic jersey fabric. • Easy to use: heat it in the microwave at 1000W for 35 seconds or cool it in the freezer for at least 1 hour. • Product dimensions: 16.5 cm wide, 6 cm high, 32 cm long. Weight: 0.717 kg.