I’m a Sleep Editor, and this is why I’m using the ‘3F rule’ to make my bed as warm and cosy as possible this winter

Where I live, nighttime temperatures are predicted to drop below freezing this week, and that means I'm on a mission to make my bed as cosy as possible before the cold weather hits.

According to bedding experts, the '3Fs rule' is the insider's trick to doing exactly that.

Yep, when it comes to cosy-maxxing your sleep setup, the 3Fs rule is the key to creating not just a cosy bedroom, but a cosy bed that will keep you warm and snuggly all winter long.

So what exactly is the 3Fs rule? Cristiano Quieti, chief merchandising officer at Italian linen house Frette, and bedding expert and Secret Linen Store co-founder Molly Freshwater explain all.

'The 3Fs – fibre, finish and feel – are the best way to determine the quality of bed linens,' explains Cristiano. 'Many believe thread count is the only number that matters when considering the best fabric for sheets, but other important factors to consider are the weave of the fibre, the finish of the material, and the way the fabric feels on your skin.'

And as Molly points out, 'this is especially important to factor in when it comes to buying bedding for the winter months, because the warmest bedsheets aren't always those with the highest thread count.'

1. Fibre

In order to make our beds a cosy place to hunker down this winter, our experts say the first F in the 3Fs rule stands for fibre. That means the type of material our bedding is made from, and the best bedding materials are those made from natural fibres.

'Investing in bedding made from 100% natural materials, like cotton or linen, will make a huge difference to your sleep experience,’ confirms Jo James, founder and creative director of bedding brand Bedfolk.

‘These materials are temperature regulating and naturally breathable,' explains Jo. And whilst you might think that breathability is less important in winter than summer, the key to a good night's sleep is to stay warm and cosy, but without getting sweaty or overheating, which can happen with synthetic bedding, like sheets and duvet covers made from polyester.

2. Finish

However, according to our experts, just as important as our bedding fibre is the second F: finish.

'Lovely natural fibres such as cotton and linen are brilliant all year round because they're breathable,' explains Molly, 'but the real game changer is (perhaps surprisingly) the fabric finish.'

'Brushed cotton bedding is a real favourite for colder months because the fabric is gently brushed to lift the fibres, creating a soft, cosy surface,' says Molly. 'This surface traps warm air and feels like a big hug as you flop into bed. Brushed linen works similarly, giving you all the relaxed character and breathability linen is loved for, with an extra layer of softness and warmth.'

'By comparison, very smooth fabrics such as crisp cotton percale can feel cooler and fresher against the skin, which some people love, but they may not feel quite as inviting on a chilly winter evening.'

3. Feel

Finally, there's the third F in the 3F rule, and that stands for feel. 'The feel is the texture and weight of the finished product, explains Cristiano.

'Feel matters just as much as fibre when it comes to keeping cosy, agrees Molly. 'Softer fabrics tend to drape more naturally around your body, helping to keep warm air in and cold draughts out. That's why relaxed linen and brushed cotton often feel so comfortable in winter. Rather than sitting stiffly on the bed, they settle and hold you, which feels sooooo good.'

'It's also worth remembering that warmth isn't just about temperature,' says Molly. 'The feeling of slipping into bedding that is soft, peachy and gentle against your skin can make your bedroom feel cosier before you've even had a chance to pull the duvet up. It's that comforting feel that we look forward to all day, and it's exactly what makes winter bedtimes super appealing.'

So, if you're considering where to buy bedding to keep you warm and cosy throughout the winter months, make sure to factor the 3Fs into your purchase by considering fibre, finish, and feel.

I for one will definitely taking a leaf out of the experts' playbook and dressing my bed in soft and snuggly brushed cotton and brushed linen bedding this winter.