Premium 350ml Vacuum Insulated Flask – Feiyou High-Quality Stainless Steel

Advanced Double-Wall Vacuum Insulation
– Keeps beverages hot for 12+ hours or cold for 24+ hours with precision-engineered 304 stainless steel construction for maximum temperature retention.
Ultra-Portable & Durable Design
– Sleek 350ml capacity (11.8oz) fits effortlessly in backpacks, cup holders, and gym bags, featuring a reinforced base to resist drops and scratches.
Premium Leakproof Lid
– Equipped with a threaded, airtight stainless steel stopper to prevent spills during travel, hiking, or daily commutes.
Multi-Surface Rustproof Finish
– High-polish exterior resists corrosion and retains shine, ideal for outdoor adventures, office use, or as a stylish everyday companion.
Customizable Branding Option
– Perfect for corporate gifts or bulk promotions with seamless logo engraving capabilities on the matte or glossy surface.
Versatile Hot & Cold Use
– Safe for coffee, tea, iced drinks, and smoothies, with a non-toxic, BPA-free interior for health-conscious consumers.
Effortless Maintenance
– Wide mouth allows easy cleaning, while the stain-resistant interior prevents flavor retention for long-term freshness.
Global Bulk Wholesale Advantage
– Direct factory pricing ensures unbeatable value for large orders, backed by fast international shipping and flexible customization.