1. Material: PVC 2. Thickened PVC material, health and environmental protection, safety and warmth, explosion-proof and anti-pressure 3. Long-lasting heat preservation, non-slip and anti-scald, soft and comfortable, hold in the hand of warmth 4. Screw cover design, strong sealing, inner liner one-piece molding, wild dumping without water leakage 5. Anti-slip pattern, three-dimensional glossy, delicate texture, smooth and clean edges 6. Enlarged irrigation port, filling more convenient, uniform and slow heating, warm care all night long 7. Weight: 1000ml about 180g, 2000ml about 265g 8. Size: 1000ml about 15 x 24cm, 2000ml about 20 x 31cm 9. Note: delivery only hot water bag, does not contain other