1.Material: inside 304 stainless steel; outside 201 stainless steel.
2.Insulation performance: 6-12 hours.
3.Features: leak-poof design non-slip silicon bottom mat portable put onto the bag tightly fitted lid prevents the inside liquid from leaking it is recommended into the bag and suitable for office home travel use.6.Others: fresh brief healthy easy to carry and mini size (250ml) and light weight (303g) sweet shape for babies or girls.