Double Wall Stainless Steel Vacuum Thermos Tumbler Flask.

1. High quality stainless steel 304, double insulating wall, optimally keeps the beverage hot and cold.

2. 100% BPA free, durable and rust resistant, safe and healthy.

3. Modern and Convenient design. The smart water bottle is ideal for easy travel, perfect for outdoor sport, work, picnic, camping, etc. Simple and practical.

4. Delicated smooth, larger diameter is easier for cleaning.

5. Thickened bottom, anti-skid and abrasion.

6. Any color customized.