Finding the best sheets for an extra thick mattress starts with getting the fit right. Measure your mattress from the bottom edge to the top of any topper or pad, then look for a fitted sheet designed to cover that full depth. The five sets below are listed for mattresses 18 to 24 inches deep, with options in microfiber, cotton, Egyptian cotton, and bamboo-derived rayon.
Quick Comparison
| Sheet Set | Material | Listed Mattress Depth | Best For |
|---|---|---|---|
| Hearth & Harbor Extra Deep Pocket Queen Sheets | Microfiber | 18–24 inches | Queen beds and extra pillowcases |
| Shilucheng Egyptian Cotton Sheets | Egyptian cotton | 18–24 inches | Queen beds and natural cotton bedding |
| SONORO KATE 1000 Series Sheets | Egyptian cotton | 18–24 inches | King beds and a crisp cotton feel |
| AiAngu Bamboo-Derived Sheet Set | Rayon derived from bamboo | 18–24 inches | King beds and a smooth, moisture-wicking fabric |
| HYPREST Deep Pocket King Sheet Set | Cotton percale | 18–24 inches | King beds and breathable cotton percale |
Our Picks: Best Sheets For Extra Thick Mattress reviews
Hearth & Harbor Extra Deep Pocket Queen Sheets: A Practical Microfiber Set
This queen-size set is made from double-brushed microfiber and is designed for mattresses 18 to 24 inches deep. It includes a fitted sheet, a flat sheet, and four pillowcases, making it a useful option if you want extra cases without buying them separately.
The fitted sheet measures 60 by 80 inches, and the flat sheet measures 90 by 102 inches. The brand describes the fabric as resistant to pilling, snagging, fading, stains, shrinking, and wrinkles. It is machine washable in cold water and can be tumble-dried on low.
Microfiber is a different choice from the cotton sets below: this set emphasizes a brushed, soft feel and easy-care features rather than a crisp percale texture. The listed pocket range is broad, but measuring your mattress with any topper in place is still important. The product information does not specify an elastic design beyond its deep-pocket fit.
Pros:
- Designed for mattresses 18 to 24 inches deep.
- Includes four pillowcases in a queen set.
- Double-brushed microfiber is described as soft and easy to care for.
- Available in a selection of colors, according to the product details.
Cons:
- Microfiber may not suit shoppers who prefer natural-fiber bedding.
- The listed fabric features do not provide a thread count or specific weave density.
Verdict: Choose this set if you have a queen mattress, want four pillowcases, and prefer brushed microfiber over cotton.
Shilucheng Egyptian Cotton Sheets: A Queen Set for Deep Beds
Shilucheng lists this set as queen size and describes it as 100% Egyptian cotton. Its fitted sheet is specified as 60 by 80 inches with a 20-inch depth, while the product title and description say the set fits mattresses 18 to 24 inches deep. The package includes a flat sheet and two pillowcases.
The brand describes the cotton as breathable and suitable for year-round use. It also states that the sheets are OEKO-TEX Standard 100 certified. Care instructions call for a gentle cold-water wash and low-temperature tumble drying, with low-heat ironing if needed.
There is a detail worth checking before ordering: the description refers to a king set in one place, even though the title says queen and the fitted-sheet dimensions are 60 by 80 inches. Confirm that the selected size and package contents match your bed before purchasing. The listed fitted-sheet depth is 20 inches, so check how the maker’s 18-to-24-inch fit range applies to your mattress.
Pros:
- Described as 100% Egyptian cotton.
- Queen fitted-sheet dimensions are listed as 60 by 80 inches.
- Designed for deep mattresses, including those with toppers or pads.
- Product details state OEKO-TEX Standard 100 certification.
Cons:
- The product description contains mixed queen and king wording, so verify the selected size.
- The stated fitted-sheet depth is 20 inches, while the overall fit range is 18 to 24 inches.
Verdict: This is a promising queen-size option if you want cotton, but verify the size selection and pocket-depth details before buying.
SONORO KATE 1000 Series: Egyptian Cotton for King Beds
This king-size set is made from 100% Egyptian cotton and is described as having a 1,000 thread count. It includes a fitted sheet, a flat sheet, and two pillowcases. The fitted sheet measures 78 by 80 inches and is designed for mattresses 18 to 24 inches deep.
The fitted sheet has a 360-degree elastic band, which is intended to help hold it in place around a deep mattress. The set is positioned as a breathable cotton option for thick beds, including double pillow-top and memory foam mattresses. The brand also states that its materials and production methods have OEKO-TEX and GOTS certification.
This set may appeal if you want cotton with a substantial thread-count specification, but thread count alone does not tell you how a sheet will feel or perform. The product details do not provide a specific pocket-depth measurement separate from the 18-to-24-inch fit range. For a mattress near the top of that range, confirm the fit details and account for any topper.
Pros:
- Made from 100% Egyptian cotton, according to the product description.
- Designed for king mattresses 18 to 24 inches deep.
- Features a 360-degree elastic band on the fitted sheet.
- Includes two king-size pillowcases and states OEKO-TEX and GOTS certification.
Cons:
- The listed thread count does not guarantee a particular feel or level of comfort.
- A separate fitted-sheet pocket measurement is not provided beyond the fit range.
Verdict: Consider this set if you have a king bed and want Egyptian cotton with a fully elasticized fitted sheet and a stated 18-to-24-inch fit range.
AiAngu Bamboo-Derived Rayon Sheets: A Smooth King-Size Set
AiAngu’s four-piece king set is made from 100% rayon derived from bamboo. It includes a fitted sheet, a flat sheet, and two pillowcases. The fitted sheet is listed at 78 by 80 inches, and the set is designed for mattresses 18 to 24 inches deep.
The product description highlights a smooth feel, moisture wicking, and temperature regulation. It also describes a twill weave and a double-stitched elastic hem. These details make the set worth considering if you prefer a drapey fabric and want an alternative to cotton, though the cooling claims are the manufacturer’s description rather than a guarantee of how it will feel in every bedroom.
Care instructions say the bedding is machine washable and resistant to fading and wrinkling. As with any deep-pocket set, check the depth of your mattress plus any topper or pad. The product information does not give a separate measured pocket depth beyond the stated 18-to-24-inch range.
Pros:
- Made from rayon derived from bamboo, with a smooth, drapey feel described by the brand.
- Designed for king mattresses 18 to 24 inches deep.
- Includes a fitted sheet, flat sheet, and two pillowcases.
- Product details describe moisture-wicking properties and a double-stitched elastic hem.
Cons:
- Not a natural cotton set; the fabric is rayon derived from bamboo.
- The stated fit range does not include a separate pocket-depth measurement.
Verdict: Pick this set if you want a king-size, bamboo-derived rayon option and prefer a smooth fabric to the feel of cotton.
HYPREST Cotton Percale Sheets: A Breathable King-Size Choice
HYPREST’s four-piece king set is made from 100% cotton percale. It includes a fitted sheet, a flat sheet, and two pillowcases. The fitted sheet measures 78 by 80 inches and is listed as 21 inches deep, with an all-around elastic edge that can stretch to fit mattresses up to 24 inches deep.
The brand describes the cotton as lightweight, breathable, and moisture-wicking. It also recommends washing the set before first use, noting that the cotton fibers soften with washing. That makes this a useful pick for shoppers who want a traditional cotton option and are comfortable with a feel that may change after laundering.
Its stated 21-inch fitted-sheet depth is a helpful detail, but it leaves less room to spare on a mattress near 24 inches than a sheet with a larger stated pocket measurement might. The elastic is intended to accommodate the upper end of the range, but check your mattress and topper measurements carefully.
Pros:
- Made from 100% cotton percale.
- Provides a specific fitted-sheet depth of 21 inches and states a stretch fit up to 24 inches.
- All-around elastic is designed to help keep the fitted sheet in place.
- Includes a flat sheet and two king-size pillowcases.
Cons:
- The 21-inch fitted-sheet depth may be a closer fit on mattresses approaching 24 inches.
- The product description does not state a thread count.
Verdict: Choose HYPREST if you want a breathable cotton-percale set for a king bed and your measured mattress depth is within its stated fit range.
How to Choose Sheets for an Extra Thick Mattress
Measure the Full Mattress Height
Measure from the bottom edge of the mattress to its top surface. Include any mattress topper, pad, or other layer you plan to keep on the bed. A mattress described as 18 inches deep may need a deeper pocket once those layers are added. Compare your total measurement with the sheet’s stated fit range, and leave some room rather than choosing a set that only just reaches the top of the mattress.
Check the Bed Size and Fitted-Sheet Dimensions
Confirm that the fitted sheet matches your mattress size as well as its depth. For example, the listed queen fitted sheets in this group measure 60 by 80 inches, while the king fitted sheets measure 78 by 80 inches. If a product description uses mixed size wording, check the selected size and package contents before placing an order.
Look Beyond the “Deep Pocket” Label
Deep-pocket wording does not always tell you exactly how much fabric is available at the corners. Some product details give a fitted-sheet depth, while others state only a mattress fit range. When the depth is specified, compare it with your measured mattress height. Also look for details about elastic around the sheet, since a secure edge can help keep the fitted sheet in place.
Choose a Fabric That Suits Your Preferences
Microfiber, cotton, Egyptian cotton, and rayon derived from bamboo can feel and behave differently. The Hearth & Harbor set uses brushed microfiber and emphasizes easy care. The cotton options provide a natural-fiber alternative, with HYPREST specifically described as percale. AiAngu uses bamboo-derived rayon and describes it as smooth and moisture-wicking. Consider which fabric qualities matter most to you rather than assuming one material is right for everyone.
Review What Comes in the Set
Set contents can vary, even when products have similar names. Check whether the package includes two or four pillowcases and make sure the pillowcase dimensions suit your pillows. If you use several pillows or want matching spares, the Hearth & Harbor queen set includes four pillowcases; the other listed sets include two.
Consider Care Instructions
Check the washing and drying directions before choosing. The products here generally specify machine washing and low-temperature drying, but some give more detailed instructions, such as a gentle cold-water cycle or washing before first use. Following the care directions can help you maintain the fabric and fit over time.
Frequently Asked Questions
What pocket depth should I look for on an extra thick mattress?
Start by measuring the mattress, including any topper or pad. Then choose a fitted sheet whose stated fit range covers that total depth. These five sets are listed for mattresses between 18 and 24 inches deep, but their specific fitted-sheet details vary.
Will a deep-pocket sheet fit a mattress with a topper?
It may, provided the mattress and topper together fall within the sheet’s stated fit range. Measure the combined height rather than relying only on the mattress’s listed depth, and check the product’s fitted-sheet dimensions when available.
Are all of these sheet sets the same bed size?
No. Hearth & Harbor and Shilucheng are listed as queen sets. SONORO KATE, AiAngu, and HYPREST are listed as king sets. Check both the selected size and the package dimensions before ordering.
Which option includes the most pillowcases?
The Hearth & Harbor queen set includes four pillowcases. The other sets in this list include two pillowcases each.
Are bamboo sheets the same as cotton sheets?
No. The AiAngu set is made from rayon derived from bamboo, while the cotton options use cotton. They are different materials and may feel different. Choose based on your fabric preference and the care details provided by the manufacturer.
Is a 21-inch fitted sheet suitable for a 24-inch mattress?
HYPREST lists a 21-inch fitted-sheet depth and says the elastic can stretch to fit mattresses up to 24 inches deep. If your mattress is close to 24 inches, measure it with any topper in place and consider how much fabric will be needed to cover the corners.
What is the best way to keep fitted sheets from slipping?
Choose the correct bed size and a fitted sheet with a depth that matches your full mattress height. Some sets in this list describe an all-around elastic edge or a 360-degree elastic band. Correct sizing is still essential, especially on a very tall mattress.
Final Recommendation
For a queen bed and extra pillowcases, the Hearth & Harbor set is a straightforward microfiber choice with a stated 18-to-24-inch fit range. If you prefer cotton, compare Shilucheng’s queen-size details carefully with HYPREST’s specific 21-inch fitted-sheet depth and stretch-to-24-inch claim. King-bed shoppers can choose between Egyptian cotton, bamboo-derived rayon, and cotton percale. In every case, measure the full mattress height and verify the selected bed size before buying.