Linen Fitted Sheets 101: Sizes, Fit and How to Choose
Posted: 22 October 2026
If you've ever been woken up by a fitted sheet corner pinging loose at 2am, the fix almost always comes down to one thing: depth, not size. Here's how to get linen fitted sheets that actually stay put.
Why depth matters more than size
Linen fitted sheets come in four depths, from 30cm up to 50cm, each with a sturdy elastic edge designed to hold the sheet taut around the mattress. The size on the label (Single, Double, Queen, King) tells you the footprint, but the depth is what determines whether it'll actually fit. Before you buy, measure your mattress plus any topper combined — if you sleep on a mattress and topper stacked together, you need to measure that full height, not just the mattress on its own.
What makes linen fitted sheets worth it
Beyond the fit, linen fitted sheets are breathable in a way cotton and microfibre aren't, so they're genuinely comfortable to sleep on year-round rather than only in winter. They also get noticeably softer with every wash, so the sheet you buy today keeps improving rather than wearing out.
Choosing between collections
Browse our full range of Linen Fitted Sheets to see every depth and colour we stock. If you're still unsure which depth you need, our guide to measuring your mattress for a fitted sheet walks through it step by step, and Choosing Your French Linen Fitted Sheet goes further into which weight and finish suits different sleepers — this post is really about the depth and size decision, so those two guides are worth a look if you want the fuller picture.
The short version
Measure mattress plus topper, match that to the right depth (not just the size label), and your linen fitted sheets will stay put all night.
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