1. Inner liner material: rubber 2. Shell material: spandex soft cotton 3. Spiral seal cover, shaking is not easy to leak 4. Add velvet inside, removable and washed 5. Rubber is explosion-proof, with anti-skid and anti-hot texture 6. Keep warm at room temperature for 2-4 hours, and keep warm inside the quilt for 4-6 hours 7. Size: 2000 ml 32x19 cm, 1000 ml 26.5x16 cm 8. Weight: 2000 ml 410 g, 1000 ml 370 g
