Stainless Steel Vacuum Flask 500 ml

Stainless Steel Vacuum Flask 500 ml

Keep liquids to the correct temperature on the move, without the risk of spilling them. This vacuum flask from Olympia holds a capacity of 500ml, ideal for personal sized liquids. An inside vacuum seal ensures that the contents are kept hotter and fresher for longer. This flask is made from stainless steel so it looks attractive and also provides extra insulation. Completed with a cup as the lid to save you space on the go.

What is a vacuum flask and how does it work?

A vacuum flask is a vessel that helps keep your hot drinks warmer for longer, and your cold drinks cooler for longer. It works by preventing heat leaving - or entering - the flask in three ways. Firstly, the inside is coated with a silver finish that prevents heat radiating out, or, in the case of chilled drinks, radiating in. Next, the double wall design creates a pocket of air between the inner surface and the outer one. This prevents heat loss - or gain - via conduction, which happens when two surfaces touch. Think burning your hand when touching a hot surface. That's conduction! The last way vacuum flasks retain heat is by stopping convection - or the movement of heat through gas or liquid. The airtight lid of a vacuum flask prevents this happening by stopping air entering or leaving the vessel.

How do you use a vacuum flask?

Although it might seem straightforward, there are a few ways to maximise the effectiveness of your vacuum flask. Firstly, heat it before pouring your beverage in! To do this, simply fill with boiling water and allow it to sit for a few minutes. Next, pour in your tea, coffee, soup or other liquid and make sure the lid is screwed on tight. This will keep it piping hot - or refreshingly chilly - for longer.

How to clean a stainless steel vacuum flask

For best results, always wash your flask by hand. To get rid of stubborn stains, rinse with bicarbonate of soda mixed with a little water and allow to dry naturally with the lid fully removed. Always store with the l

Stainless steel flask with vacuum insulation for use on the go. Suitable for hot or cold foods.

• Suitable for hot and cold liquids
• Vacuum seal to keep liquids the desired temperature
• Lid which also doubles up as a cup
• Available in two sizes (500ml and one litre)
• Vacuum seal insulated