Tedemei Back To School Stainless Food Flask

Single Layer Stainless Steel Lunch Box and Water Bottle. Food Flask gets hot for upto 7hrs and is 1litre capacity. Constructed with the finest stainless steel. Pioneer products are guaranteed to be leak proof and durable. All of our vacuum stainless steel products keep drinks hot for 7 hours, or cold for 24 hours. Our Pioneer vacuum ware ranges are created with function and durability in mind, while always keeping an eye out for cool designs.Getting your daily enough of water can be difficult. 

Inside a Vacuum Flask

• Protective outer casing.
• Reflective stainless steel layer prevents heat energy from radiating outwards.
• Additional insulation reduces heat loss and cushions the flash against impacts.
• Screw-on stopper prevents air from entering or leaving the flask, so heat transfer by conduction is not possible
• Vacuum prevents conduction and of heat energy
• Inner stainless steel layer