As the weather gets colder, you might be thinking of new and innovative ways to save a bit of cash on your heating bills. Not all the solutions have to be super high-tech and complicated - something as simple as thermal insulated curtains can be a huge money-saver, ensuring that your warmth doesn't seep out through your windows. And right now, Amazon is offering 20% off a set of Deconovo Solid Thermal Insulated Blackout Curtains , taking them down to just £28.

89 instead of £35.99. This is for the black version in the 55x69 size - there are a couple of dozen different colours and finishes to choose from, with sizes to pick from to fit your windows - although not every colour has this same deal on it.

Whichever you pick, you'll get a set of curtains that are simple and easy to mount thanks to eyelets - this means you don't need to worry about fiddly curtain hooks or anything like that. Since they're blackout curtains, they'll let pretty much no light through at all, and that combined with their thermal properties should make for really cosy and snuggly nights. READ MORE: Dunelm shoppers saying 'bye to central heating' with 'cheap to run' £49 radiator READ MORE: 'Small but mighty' Amazon heater that 'kicks out heat straight away' slashed by 35% The user reviews for the curtains are very impressive, too - from over 62,000 ratings they've got an average score of 4.

4 stars. One of these happy customers said: "The material looks and feels so rich. It was as I would have expected .