If you own an Alaskan, Wyoming, or Texas King bed, you already know the frustrating part isn't the mattress. It's that walking into any store and asking for sheets gets you a blank look. Regular king sheets are far too small, and most brands stop at California King. This is a guide to buying Alaskan King sheets and every other oversized king sheets size, so you can dress the biggest bed in the house without the corners popping off at 2 a.m.
What counts as an oversized king?
"Oversized king" is an umbrella term for a handful of beds that are all bigger than a standard King. They are not interchangeable, and the difference between them is often a full foot of fabric, so the size you choose matters more here than with any normal bed. Here are the main ones, with a standard King listed for reference.
| Size | Dimensions | Notes |
|---|---|---|
| Standard King | 76" x 80" | For reference, not oversized |
| Wyoming King | 84" x 84" | Squarer, good for taller sleepers |
| Texas King | 80" x 98" | Extra length for very tall people |
| Alberta King | 96" x 96" | The step below Alaskan |
| Alaskan King | 108" x 108" | The largest, true family bed |
SGI also cuts a few in-between options, including Short Alaskan King, Family King, and Family XL, for beds that fall between the standard sizes. If you are not sure which you have, measure your mattress width and length in inches and match it to the closest size in the dropdown rather than guessing by name.
Why regular king sheets never work
People try it all the time, and it always ends the same way. A standard king fitted sheet is built for a 76" x 80" mattress. Stretch it over a 108" wide Alaskan King and there simply isn't enough fabric to reach the corners, so it either won't go on at all or it pings off in the night. The flat sheet is worse, since two people end up fighting over a top sheet that no longer covers both sides. One SGI reviewer with a California King waterbed put it plainly: the old sheets were so short she and her husband tugged them back and forth in their sleep, and the oversized set finally ended the nightly battle.
This is the whole reason oversized king sheets exist as their own category. They are cut to the actual mattress, with deep pockets and all-around elastic so the fitted sheet grips a much taller, wider bed. It is the one fit you cannot improvise.
How to choose the right set
Once you have your size, four things decide whether the set is worth buying. Run through them before you check out.
- ✓Confirm the exact size. Measure the mattress, then match width x length to the dropdown. Names alone are not reliable across brands.
- ✓Check the pocket depth. Oversized mattresses are often thick. SGI's fitted sheets have 15" deep pockets with 360-degree elastic, which handles most pillow-top and stacked setups.
- ✓Pick your fabric and thread count. 600 thread count cotton is the everyday choice; 1000 thread count adds a smoother, hotel-style feel. Learn how the numbers work in our guide to Egyptian cotton sheets.
- ✓Look for a fit guarantee. Because these are made to order, SGI backs every oversized set with a 100% Fit Guarantee and remakes it if it doesn't fit.
Alaskan King Sheets - 1000TC Egyptian Cotton
- 1000 thread count Egyptian cotton, 4-piece set
- 15" deep pockets, 360-degree elastic, 9 colors
- Fits Alaskan, Wyoming, Texas & Alberta King
- Rated around 4.5 stars across 80+ reviews
From $115.00
Shop the setTwo more options worth knowing
Not everyone wants the top-tier set, so SGI cuts the same oversized sizes in two other fabrics. If you want the look and fit for less, the 600 thread count cotton oversized set starts at $87.99 in the same nine colors. And if you sleep hot, the bamboo viscose oversized set is the cooler, more breathable pick for a large bed. Whichever you choose, add a matching oversized mattress protector so a bed this expensive to dress stays protected.
Caring for oversized sheets
A set this large needs a little more room than a normal wash. Use a full cycle so the fabric can move freely, wash in cool or warm water, and skip high dryer heat. Cotton likes to shrink if you cook it, and on a made-to-fit sheet even a small amount of shrinkage tightens the corners. Tumble on low, pull the set out slightly damp, and it will drape better and last longer.
A few common questions
What size is an Alaskan King bed?
An Alaskan King is 108" x 108", the largest standard mattress made. It is roughly 32 inches wider and 28 inches longer than a standard King, which is why it needs its own Alaskan King sheets rather than regular bedding.
Will regular king sheets fit a Wyoming or Texas King?
No. A standard king sheet is built for 76" x 80", while a Wyoming King is 84" x 84" and a Texas King is 80" x 98". You need sheets cut for the specific oversized size.
How is an Alaskan King different from a California King?
A California King (72" x 84") is only a little longer and narrower than a standard King, while an Alaskan King is more than a foot larger in both directions. If you actually have a Cal King, see our California King sheets guide instead.
What if my bed is between two sizes?
SGI cuts Short Alaskan King, Family King, and Family XL for beds that fall between the standard names, plus fully custom sizes. Measure your mattress and pick the closest match, and the Fit Guarantee covers the rest.
SHEETS THAT ACTUALLY FIT YOUR BIG BED
Take 10% off your first order with code SGIFIRST10.
Shop Alaskan King SheetsOr browse every oversized king size
Leave a comment