Our research ranks the Sleep Number True Temp Sheet Set as the overall best XL split king sheet based on specs and owner reviews. For a more affordable option, consider the Mellanni King Size Split Bed Sheet Set.
XL split king sheets are a unique bedding category, designed for adjustable beds where each side moves independently. Finding well-fitting, durable sheets requires attention to pocket depth and fabric quality. We compared top-rated models based on certifications, owner feedback, and construction specs.
Our team ranked these sheets by analyzing thousands of owner reviews for comfort, fit, and longevity. We looked for Oeko-Tex or CertiPUR-US certifications to ensure safety. The result is a curated list of the best XL split king sheets for various needs and budgets.
Sleep Number True Temp Sheet Set
These dual-sided sheets feature 100% cotton on one side for softness and cool-touch fabric on the other for heat dissipation. The deep pockets accommodate mattresses up to 18 inches with a secure fit. Owners report consistent comfort and durability after months of use.
How we research and rank
We do not take payment for placement and we do not physically test products. Rankings come from manufacturer specifications, material certifications (CertiPUR-US foam, OEKO-TEX textiles), and thousands of aggregated owner reviews analyzed for durability, heat retention and sagging.
The picks, compared
Sleep Number True Temp Sheet Set
Adjustable bed users seeking temperature regulation · Type: Cotton/Tencel blend | Firmness: N/A | Trial: 100 nights
These dual-sided sheets feature 100% cotton on one side for softness and cool-touch fabric on the other for heat dissipation. The deep pockets accommodate mattresses up to 18 inches with a secure fit. Owners report consistent comfort and durability after months of use.
What owners report: Many reviewers praise the temperature neutrality and secure fit on adjustable bases. Some note the sheets feel crisp initially but soften after washing.
- Oeko-Tex certified
- Dual-sided temperature control
- Excellent fit on deep mattresses
- Higher price point
- Limited color options
Mellanni King Size Split Bed Sheet Set
Budget-conscious shoppers · Type: Microfiber | Firmness: N/A | Trial: 30 days
Made from brushed microfiber, these sheets offer a soft, wrinkle-resistant feel at an affordable price. The deep pockets fit up to 16 inches and include a fitted sheet, flat sheet, and pillowcases. Owners consistently highlight the value for money.
What owners report: Reviewers love the softness and color retention after multiple washes. Some mention they may pill over time.
- Very affordable
- Wrinkle-resistant
- Good pocket depth
- Not as breathable as cotton
- May pill after a year
Brooklinen Luxe Core Sheet Set – Split King
Hot sleepers · Type: Cotton sateen | Firmness: N/A | Trial: 365 days
These long-staple cotton sheets have a sateen weave for a buttery feel and excellent breathability. The split king set includes two fitted sheets for each side. Owners report they sleep cooler compared to standard cotton.
What owners report: Frequent praise for the luxurious feel and cooling properties. A few mention the fitted sheets may loosen over time.
- Oeko-Tex certified
- Breathable sateen weave
- Strong durability
- Higher price
- Fitted sheet fit could be tighter
California Design Den Split King Sheet Set
Side sleepers needing pressure relief · Type: Cotton percale | Firmness: N/A | Trial: 30 days
These 100% long-staple cotton sheets are crisp yet soft, with deep pockets up to 18 inches. They are breathable and gentle on skin. Owners appreciate the secure fit and comfortable feel.
What owners report: Reviewers note the sheets stay in place on adjustable beds. Some say they are not as silky as microfiber.
- Oeko-Tex certified
- Deep pockets
- Good for sensitive skin
- Prone to wrinkling
- Limited color range
Southshore Fine Linens Split King Sheet Set
Extremely tight budgets · Type: Microfiber | Firmness: N/A | Trial: 30 days
This microfiber set offers a budget-friendly option with a 16-inch pocket depth and a soft, brushed finish. It is machine washable and fade resistant. Owners recommend it for guest rooms or temporary use.
What owners report: Many highlight the low price and decent quality. Some report pilling after a few washes.
- Lowest price point
- Wrinkle-resistant
- Machine washable
- Less breathable than cotton
- May pill quickly
Linenwalas 100% Belgian Flax Linen Split King Sheet Set
Those who prefer a crisp, textured feel · Type: Linen | Firmness: N/A | Trial: 30 days
These 100% linen sheets become softer with each wash and have a natural texture that is firm initially. The split king includes two fitted sheets with deep pockets. Owners appreciate the durability and breathability.
What owners report: Reviewers love the natural look and feel. Some find the initial stiffness off-putting.
- Eco-friendly linen
- Breathable
- Long-lasting
- Expensive
- Initially stiff
Luxome Luxe Sheet Set – Split King
Those wanting a balance of softness and cooling · Type: Bamboo lyocell | Firmness: N/A | Trial: 90 days
These bamboo-derived lyocell sheets are ultra-soft, moisture-wicking, and temperature-regulating. The split king set fits adjustable beds well with deep pockets. Owners report a silky feel without slipping.
What owners report: Frequent compliments on the softness and cooling effect. A few note the sheets can snag easily.
- Oeko-Tex certified
- Moisture-wicking
- Silky texture
- Slightly slippery on some mattresses
- May snag
Frequently asked questions
What makes XL split king sheets different from standard king sheets?
XL split king sheets are designed for adjustable split king beds, where each side moves independently. They include two fitted sheets (one for each side) instead of one large fitted sheet, and often have deeper pockets to accommodate thicker mattresses.
What pocket depth should I look for in XL split king sheets?
Most XL split king sheets have pockets 14-18 inches deep. Measure your mattress thickness and add a few inches for a secure fit. If you have a mattress topper, account for that as well.
Are microfiber or cotton XL split king sheets better?
Cotton offers breathability and natural softness, while microfiber is budget-friendly and wrinkle-resistant. Cotton is better for hot sleepers; microfiber is more durable in low-cost options. Choose based on your priorities.
Can I use regular king sheets on a split king adjustable bed?
Not recommended. Regular king fitted sheets are one piece and will not conform to the split movement, causing bunching and poor fit. XL split king sheets have two fitted sheets for each side.
How often should I replace my XL split king sheets?
With proper care, high-quality sheets last 2-5 years. Microfiber may show pilling sooner, linen lasts longer but requires gentle washing. Replace when they show thinning, fading, or loss of softness.
The verdict
The Sleep Number True Temp Sheet Set is our top pick for its Oeko-Tex certification and dual-sided temperature control. For a budget-friendly choice, the Mellanni King Size Split Bed Sheet Set offers great value. Alternatively, the Brooklinen Luxe Core Sheet Set excels for cooling.
