304 stainless steel inner,avoid of unhealthful chemical substances when using under high temperature.
Cup mouth, smooth, 304 high-quality stainless steel
Inner plug, Food grade materials, Food grade PP
Sealing is good, To prevent water leakage,Safe and secure
Best choice for outdoor, home, office, school, riding, traveling, etc
A great gift for your friends and families.
Vacuum sealed; keeps drinks cold for 24 hours, hot for 12.
Vacuum Insulation Technology: Where air is sucked out, creating a vacuum between the wall to minimized the effect of outside temperature