Linen Flat Sheet vs Fitted Sheet: Do You Need Both?

Flat sheet, fitted sheet, both, or neither? It is one of the most common questions we get about making a linen bed — and the answer is more flexible than you might think. Here is a clear, honest look at what each sheet does, whether you really need both, and how to choose linen sheets that last.

What each sheet actually does

A fitted sheet has elasticated corners and stretches snugly over your mattress — it is the layer you sleep directly on, and for most people it is essential. A flat sheet is a simple rectangle that lies between you and your duvet or blanket. It adds a soft, washable layer, a little extra warmth, and that hotel-style finish when folded over the top. Browse both in our French linen sheet sets.

Do you actually need a flat sheet?

Not necessarily. Plenty of people, especially those who use a duvet cover, skip the flat sheet entirely and simply wash their duvet cover more often. Others love a flat sheet because it keeps the duvet cleaner, feels cooler in summer when you kick the duvet off, and adds a cosy extra layer in winter. There is no wrong answer — it comes down to how you like your bed to feel.

The case for using both

Using a fitted and a flat sheet together gives you the most flexibility through the year. In winter, the flat sheet is an easy extra insulating layer under your duvet; in summer, you can sleep under just the breathable flat sheet on warmer nights. Linen makes this especially comfortable because it is temperature-regulating and moisture-wicking — the same reason it works so well through an Australian winter.

How to choose linen sheets that last

Whichever combination you choose, quality matters more than quantity. Look for 100% European flax, a stonewashed finish for softness from the first night, and OEKO-TEX certification so there are no harsh chemicals against your skin. Getting the fabric weight right also matters — our GSM guide explains how weight changes the feel. Complete the look with matching French linen bedding in the colour of your choice.

Frequently asked questions

Do I need a flat sheet if I use a duvet cover?
No. Many people skip it and wash the duvet cover more often. A flat sheet is optional and comes down to preference.

Which is more important, fitted or flat?
The fitted sheet — it is the layer you sleep on. A flat sheet is an optional extra.

Are linen sheets good for summer and winter?
Yes. Linen is temperature-regulating, so it sleeps cool in summer and cosy in winter, which makes using both sheets very flexible.

What size sheet should I buy?
Match the sheet to your mattress size. Our sheets come in AU, US and EU sizes, with custom sizing available.