
Corrosion-Resistant Jyz-Yd60 Leakproof Stainless Steel Thermal Flask for Mountaineering. Premium Material Construction: Inner 304 SS for safety, Outer 201 SS for durability and rust resistance. Leak-Proof Bamboo Lid Design: Features food-safe silicone seal to prevent spills during travel and sports. Vacuum Insulated Performance: Maintains hot and cold temperatures for extended periods in all seasons. BPA-Free and Eco-Friendly: Safe for drinking water and reduces reliance on single-use plastic bottles. Portable Metal Handle: Sturdy integrated handle allows easy carrying or attachment to backpacks. Full OEM and ODM Customization: Supports custom branding, designs, and colors including powder coating. High Production Capacity: Daily output of 20,000 pieces with 18 years of manufacturing experience. Comprehensive Quality Control: 30+ inspectors ensure rigorous testing for insulation, leaks, and paint adhesion.