Question 1:

Is the bottle body single wall or double wall?
Answer:Single wall

Question 2:

Is it a thermos cup?
Answer:No,it is a ordinary stainless bottle.

Question 3:

Is it safe ? Is it bpa free?
Answer:
Yes ,it is safe ,I have the test creatificate,if you ask for it ,I can send the photo of test creatificate.

Question 4:

What is the bottle material?
Answer:
Cup lid:bamboo /no.304 stainless steel
Cup body:no.304 stainless steel

Packing list:

1 * stainless steel water bottle