Premium 500ml stainless steel vacuum insulation flask with upgraded sleek design

Double-walled 18/8 food-grade stainless steel construction ensures 24-hour temperature retention

Advanced copper-plated vacuum layer for maximum thermal efficiency (hot/cold)

Innovative leak-proof swing lid with one-touch opening mechanism for effortless operation

Ergonomic curved body with non-slip matte finish for secure grip during outdoor activities

Mirror-polished interior resists odors and stains for long-term hygiene maintenance

Multi-scenario use: hiking workouts office commutes camping trips and car travels

Durable powder-coated exterior withstands daily wear while maintaining aesthetic appeal

BPA-free materials meet international safety standards for food containers

Competitive wholesale pricing with bulk order discounts for global distributors