Is the bottle body single wall or double wall?
Is it a thermos cup?
No,it is a ordinary stainless bottle.
Is it safe ? Is it bpa free?
Yes ,it is safe ,I have the test creatificate,if you ask for it ,I can send the photo of test creatificate.
What is the bottle material?
Cup lid:two style design,one of them is no.304 stainless cup lid,the other is bamboo cup lid and no.304 stainless
Cup body:no.201 stainless
1 * stainless steel water bottle