Question 1:  
Is the bottle body single wall or double wall?  
Answer: The bottle features a single wall design, making it lightweight and easy to carry.

Question 2:  
Is it a thermos cup?  
Answer: No, this is not a thermos cup; it is a standard stainless steel bottle that is perfect for everyday use.

Question 3:  
Is it safe? Is it BPA free?  
Answer: Yes, it is completely safe for use and is BPA-free.

Question 4:  
What is the bottle material?  
Answer: The cap is made from durable bamboo and high-quality No. 304 stainless steel, while the body consists of resilient No. 304 stainless steel, ensuring both longevity and safety.