Standing in front of a wall of standard sizes, wondering if your mattress is really going to fit any of them, is a familiar moment. A custom sheet set exists for exactly that moment. But custom costs more and takes longer to arrive than grabbing a Queen off the shelf, so it is worth knowing when it is actually the right call and what you get for the extra cost.
Choose a custom sheet set if your mattress falls between standard sizes, is unusually deep, or is a shape no off-the-shelf set covers. A standard set is faster and cheaper if your mattress is a normal Twin through California King size and depth.
Custom vs standard: how to decide
The honest test is simple: measure your mattress width, length and depth, then check them against the standard size chart. If every number lands within a normal range, a standard sheet set will almost always fit and cost less. A custom sheet set earns its price when the numbers do not line up cleanly.
| Your mattress is… | Better choice |
|---|---|
| A normal Twin, Full, Queen, King or Cal King | Standard set |
| Between two standard sizes, or an odd width/length | Custom set |
| Deeper than 18 inches (thick mattress plus topper) | Custom set |
| An antique frame, boat berth, RV bunk or other unusual shape | Custom set |

What is actually included
A custom sheet set includes the same pieces as a standard set: a fitted sheet cut to your exact width, length and depth, a flat sheet, and pillowcases. The difference is entirely in the fitted sheet, since that is the piece that has to match your mattress precisely. Deep pockets and all-around elastic are built in the same way as SGI's standard sets, just sized to what you tell us rather than a fixed chart.
What it costs, and why
Custom sets cost more because each one is cut and sewn individually rather than pulled from stock, and they take longer to ship for the same reason. In exchange, you get a fit that a standard set simply cannot offer if your mattress falls outside the normal chart. If your size is common, that extra cost buys you nothing, which is why the honest first step is always to measure and check the chart before ordering custom.
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600 Thread Count Cotton Custom Size Sheets Set Cut and sewn to your exact measurements, deep pockets, 360-degree elastic, 100% Fit Guarantee. From $124.99. Shop this set |
Frequently asked questions
Is a custom sheet set worth the extra cost?
Only if your mattress does not match a standard size. If it does, a standard set fits just as well for less money and a shorter wait.
How much more does a custom sheet set cost than standard?
Custom sets start higher because each one is made to order rather than pulled from stock. The gap is usually worth it only when standard sizing genuinely does not fit.
What if I order custom and it still does not fit?
SGI's 100% Fit Guarantee means it gets remade at no extra cost if your measurements do not work out the first time.
Do custom sheet sets take longer to arrive?
Yes, since each set is cut and sewn after you order rather than shipped from existing stock. Factor in extra time versus a standard set.

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