1. Both inner wall and outer wall are made of high quality 304 stainless steel material, cooper plating ensure longer time to keep hot and cold.

2. Diameter of mount is 3 inches, easy to put the ice into bottle and easy to clean.

3. Powder coating surface is much more durable and nonslip.

4. 304 stainless steel mix ball help to shake protein powder better

5. Portable design: with 2 handles, easy to carry

6. Screw lid and 2 silicone ring in the lid,You don't have to worry about leak problem.