Custom Size Bed Sheets: How It Works

At some point almost everyone with an unusual bed hits the same wall: you scroll through every size dropdown a store offers and your mattress just is not one of the options. Maybe it is an antique frame, a boat berth, an RV bunk, or a mattress that falls exactly between two standard sizes. That is what custom size sheets are for. Here is exactly how custom sheet ordering works, what to measure, and what to expect from a made-to-order set.

Who actually needs custom sheets?

Custom sizing is not a novelty, it solves a real, common problem. You are a good candidate for custom size bed sheets if any of this sounds familiar:

• ✓Your mattress is an odd or antique size that predates modern standards.
• ✓You sleep on a boat, RV, camper, or truck sleeper with a non-standard berth.
• ✓You have added a thick topper or stacked mattress and no fitted sheet pocket is deep enough.
• ✓Your mattress falls between two standard sizes, like a bit wider than Queen but shorter than King.

If you have already tried an off-the-shelf oversized option, our guide to Alaskan King sheets covers the largest standard size before you need to go fully custom.

How to measure your mattress for a custom order

Accurate measurements are the whole game with a made-to-order set, since there is no size chart to fall back on. Take these three numbers before you order.

• 1.Width, measured straight across the mattress at its widest point.
• 2.Length, measured from head to foot along the longest edge.
• 3.Depth, measured from the bottom of the mattress to the top, including any topper you sleep on.

Measure with the mattress bare, not through existing sheets or a mattress pad, and round to the nearest quarter inch rather than guessing. If your bed has an unusual shape, such as a V-berth or a tapered corner, note that separately since it changes how the sheet is cut, not just its dimensions.

What happens after you order

Unlike a standard set pulled from stock, a custom size sheet set is cut and stitched specifically for you. SGI makes these in-house at the factory with no middleman, so the same skilled team measuring and sewing standard sizes handles your custom order too. That is also why custom sets take a little longer to ship than an in-stock item, since nothing is cut until your order comes in.

What if it does not fit?

This is the part that makes custom ordering low-risk instead of a gamble. Every custom bed sheets order from SGI comes with a 100% Fit Guarantee. If your measurements were off or the finished set does not sit right on your mattress, it gets remade rather than leaving you stuck with sheets that do not work. That guarantee is what turns a made-to-order purchase, which normally feels riskier than buying off a shelf, into a safe bet.

Our Pick

600TC Cotton Custom Size Sheet Set

• Cut and stitched to your exact width, length, and depth
• 100% long-staple cotton, 360-degree all-around elastic
• 4-piece set, 9 colors, backed by a 100% Fit Guarantee

From $124.99

Order custom sheets

If you sleep hot, the same made-to-measure service is available in our custom size bamboo sheets, cut to your exact dimensions in a cooler, more breathable fabric. And if your bed happens to be a boat berth, our V-berth sheets guide covers those shapes specifically, since many V-berths still need some custom adjustment beyond the standard cut.

A few common questions

How much more do custom sheets cost than standard sizes?

Custom sheets run a bit higher than the equivalent in-stock size, since each set is individually cut rather than produced in bulk. The premium reflects the labor of a made-to-order piece, not a markup on the fabric itself.

How long does a custom order take?

Longer than a standard in-stock set, since nothing is cut until your measurements are submitted. Factor in extra shipping time when you order, especially if you need the sheets by a specific date.

What if I measure wrong?

That is exactly what the 100% Fit Guarantee covers. If the finished set does not fit your mattress, SGI remakes it rather than leaving you with an unusable sheet set.

Can I get a custom depth without a custom width?

Yes. Some people only need a deeper pocket for a thick mattress or topper, with a totally standard width and length. Note this when you order so the cut matches only what you actually need changed.