FYI | Makluman:

Tyeso Vacuum Insulated Cup 710ml with strap

• The inside of the cup: made of 304 stainless steel which is very safe and holds heat well

• Vacuum layer: in the middle of the bottle and the bottle has an insulating effect, seperating the inner and outside of the bottle, keeping the heat from being lost

• Designed with silicone strap

• Time to keep heat: about 4 to 6 hours ; Keep cold: about 10 - 12 hours.