Stainless Steel Double Vacuum Flask Portable Spray painted American Straight Cup Business Gifts Advertising Cup

Product category: vacuum flask Liner material: 304 stainless steel Thermal insulation performance: 6-12 hours Material: inner 304 and outer 201 Shell material: 201 stainless steel Function: household, portable, vacuum, thermal insulation, customizable. Capacity: 450ml This universal product is designed for daily use, suitable for a wide range of scenarios. It is made with fine workmanship and strict quality control, ensuring stable performance and good durability. Simple to operate and easy to maintain, it is a practical choice for daily life, meeting your various daily needs.