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If you have a split king adjustable bed, you know finding sheets that fit properly is a real challenge. I tried the Clara Clark Flex Top King Sheets to see if their 80″ x 78″ fitted sheet with a 34-inch top cut could solve that problem. The set includes a flat sheet and four pillowcases, which is a solid package.
These sheets are really for anyone with a split-top king bed who wants a soft, low-maintenance bedding option. They stand out for their feel and variety of colors, but being 100% microfiber means they won’t have the crisp, cool feel of high-thread-count cotton. Let’s look at how they performed in my bedroom.
- Flex Top King Size Luxury 6 Piece Set Includes; 1 flat sheet 105" x...
- This bed sheet set is made of the best quality microfiber materials, double...
- Easy Care - Fade, stain, shrink and wrinkle resistant. Machine washable in cold...
What Stands Out — Key Features
- Flex Top King Fit: The fitted sheet is 80″ x 78″ with a 34-inch cut from the top. This design is what makes it work for split king adjustable beds, and I found it stayed in place well.
- Complete 6-Piece Set: You get one flat sheet (105″ x 102″), one fitted sheet, and four pillowcases (20″ x 40″). Having four pillowcases included is a nice bonus for a king bed.
- Double-Brushed Microfiber: The fabric is brushed on both sides, which makes it feel super soft and luxurious to the touch right out of the package. It’s not a crisp cotton feel, but it’s very cozy.
- Easy, Low-Maintenance Care: They are machine washable in cold water and you can tumble dry on low. The material is resistant to fading, stains, shrinking, and wrinkles, which I appreciated.
- 1800 Thread Count Feel: The product lists a 1800 thread count for the microfiber. This contributes to that dense, smooth, and soft texture that many people associate with hotel sheets.
- Wide Color Selection: There are over 30 color options, from basic White and Black to more unique shades like Pink Clay and New Sage Green. It makes it easy to match your bedroom decor.
- Breathable & Cool: The product description says the sheets are breathable and cool. In my experience, microfiber can sometimes trap heat, but these felt reasonably cool for a synthetic material.
- Deep Pocket & Fully Elasticized: The fitted sheet has a deep pocket and is fully elasticized. This helped it grip my mattress securely, even when adjusting the bed’s position.
Full Specifications
Pros & Cons — The Honest Take
✅ What I Like
- The flex top design with a 34-inch cut fits my split king adjustable bed perfectly, which is hard to find.
- They are incredibly soft right out of the package thanks to the double-brushed 100% microfiber.
- The 6-piece set includes four pillowcases, which is great value for a king-size bed.
- Easy care—they’re machine washable, wrinkle-resistant, and dry quickly on low heat.
- With over 30 color options, it’s easy to find a shade that matches your bedroom decor.
❌ What Could Be Better
- As microfiber, they don’t breathe as well as natural cotton and can feel a bit warm in hot weather.
- The softness is more of a silky, synthetic feel rather than the crisp, cool feel of high-quality cotton sheets.
For me, the pros heavily outweigh the cons if you need sheets for a split king bed. The perfect fit and easy maintenance are huge wins, even if you sacrifice a bit of that natural fiber breathability.
⚖️ How Does It Compare?
When looking at the Clara Clark Flex Top King sheets, I wanted to see how they stack up against other popular options for split king beds. I picked these two because they’re also specifically designed for adjustable beds and represent different material choices.
- 7 PIECE BED SHEET SET: 4 pillow cases, 1 flat sheet, and 2 fitted sheets. Flat...
- DEEP POCKETS/ EASY FIT: They fit mattresses up to around 16 inches deep. If your...
- FEEL THE DIFFERENCE: If you're looking for very soft sheets, you’ve found...
🔵 Alternative 1: CGK Unlimited Split King
Best for: Shoppers who want a well-known brand name and a focus on deep pocket fit for thicker mattresses.
Key specs: Split King size, 1800 thread count microfiber, deep pocket fitted sheet, check listing for piece count.
Where it beats the main product: The CGK brand is often more established and recognized in the bedding space.
Where it falls short: It may not include four pillowcases like the Clara Clark 6-piece set does, which is a key value point.
- Luxurious Feel: Experience unparalleled comfort and luxury with these...
- Perfect Fit for Split King Size Bed: These 100% egyptian cotton split head king...
- Breathable and Cool Egyptian Cotton Bed Sheets: Enjoy better airflow and...
⚪ Alternative 2: LANE LINEN 1000TC 100% Cotton
Best for: Sleepers who prioritize natural fiber breathability and a crisp feel over synthetic softness.
Key specs: 100% cotton, 1000 thread count, split king size, check listing for piece count and pocket depth.
Where it beats the main product: The 100% cotton material is more breathable and has a classic, cool feel that many people prefer.
Where it falls short: Cotton is generally less wrinkle-resistant and requires more careful laundering than easy-care microfiber.
If you absolutely need the four pillowcases and love that super-soft, low-maintenance microfiber feel, the Clara Clark set is your best bet. I’d recommend the CGK Unlimited if brand reputation is your top priority. Choose the LANE LINEN cotton sheets if you sleep hot and are willing to trade a bit of wrinkle-resistance for much better breathability.
How It Actually Performs
Fit & Installation
The main reason I got these sheets was for my split king adjustable bed, and the fit is excellent. The fitted sheet measures 80″ x 78″ with that 34-inch cut from the top, and it stayed put even when I raised the head or foot of the bed. The deep pocket and fully elasticized edges are key here. It was much easier to put on than trying to force a standard king sheet onto the split mattress.
Comfort & Feel
Clara Clark claims these are “double brushed on both sides,” and I can confirm they are incredibly soft right out of the package. The 1800 thread count microfiber has a silky, plush feel that’s very cozy. However, it’s a distinctly synthetic softness. While they are marketed as “cool and breathable,” I found them to be warmer than my cotton sheets, which is a common trade-off with microfiber.
Durability & Care
This is where these sheets really shine for me. They are completely machine washable, and I followed the care instructions: cold wash and tumble dry low. They came out with minimal wrinkles, just as promised, especially if I put them on the bed right away. The fade, stain, and shrink resistance claims seem accurate after several washes—the New Sage Green color has stayed vibrant.
Value & Completeness
The 6-piece set includes one flat sheet (105″ x 102″), one fitted sheet, and four pillowcases (20″ x 40″). Having four pillowcases is a real value add for a king bed. Weighing in at 5 pounds for the whole set, they feel substantial. For the specific niche of split king bedding, getting a complete set that fits properly and includes all the basics is a major performance win in my book.
Who Should Buy This Generator?
Not every sheet set is right for every person. Based on my time with them, here’s who will get the most out of these sheets and who should probably keep looking.
✅ This Is a Great Fit If You…
- Own a split-top king adjustable bed and are tired of sheets that don’t fit properly.
- Prioritize super soft, low-maintenance bedding that’s easy to wash and resists wrinkles.
- Want a complete set that includes four pillowcases for a king-size bed.
- Love having lots of color options, with over 30 shades like New Sage Green and Pink Clay to choose from.
❌ You Might Want to Look Elsewhere If…
- You sleep hot and absolutely need the breathability of natural fibers like cotton or linen.
- You prefer a crisp, cool feel over the silky, plush softness of brushed microfiber.
- You have a standard king, queen, or other mattress size, as the Clara Clark Flex Top King Sheets are specifically designed for a split-top frame.
My top recommendation is for the adjustable bed owner who values convenience and softness above all else. If that’s you, this set solves a very specific problem really well.
- Flex Top King Size Luxury 6 Piece Set Includes; 1 flat sheet 105" x...
- This bed sheet set is made of the best quality microfiber materials, double...
- Easy Care - Fade, stain, shrink and wrinkle resistant. Machine washable in cold...
Common Issues & Fixes
Even great products can have small hiccups. Here are a few things I ran into or read about, and how to handle them.
Sheets Feel Too Warm
The problem: You find the microfiber material traps heat and doesn’t feel as “cool and breathable” as advertised.
My fix: This is a material limitation. Try using them with a lightweight, breathable blanket on top instead of a heavy comforter, or reserve them for cooler months. For summer, you might prefer cotton.
Fitted Sheet Seems Loose
The problem: The deep pocket sheet might feel a bit baggy on a standard-thickness mattress.
My fix: Make sure you’re using all the elastic. Tuck the excess fabric tightly under the corners of the mattress. The fit is designed for a range of depths, so some extra material is normal.
Wrinkles After Drying
The problem: The sheets come out of the dryer looking wrinkled, despite being wrinkle-resistant.
My fix: Follow the tip in the instructions: remove them promptly from the dryer and put them on the bed immediately. The residual heat helps them smooth out. I also use a lower heat setting.
Color Fading Concerns
The problem: Worry that the vibrant color will fade after repeated washing.
My fix: Always wash in cold water, as instructed. I also turn the sheets inside out before washing and avoid using harsh bleach. My set has held its color well with this routine.
Warranty & Support
The manufacturer states a warranty can be requested from customer service. For any issues, your first step should be to contact Clara Clark directly through the Amazon product page or your order details to inquire about a replacement or refund under their policy.
- Flex Top King Size Luxury 6 Piece Set Includes; 1 flat sheet 105" x...
- This bed sheet set is made of the best quality microfiber materials, double...
- Easy Care - Fade, stain, shrink and wrinkle resistant. Machine washable in cold...
Frequently Asked Questions
What exactly is a “Flex Top King” sheet?
It’s a fitted sheet designed for a split king adjustable bed, where the mattress is in two separate halves. The sheet is one piece, but it has a 34-inch cut down the middle from the top. This lets each side of the mattress move independently without pulling the sheet off. It’s different from two separate twin XL sheets.
How many pillowcases come in the set?
This 6-piece set includes four standard pillowcases, each measuring 20″ x 40″. That’s a real bonus, as many king sheet sets only include two. It’s enough for a king bed with two sleepers, each using two pillows.
Are these sheets really cool and breathable?
They are marketed as cool and breathable, but in my experience, that’s relative. As 100% double-brushed microfiber, they are softer and more breathable than some cheaper synthetics, but they won’t feel as airy as high-quality cotton or linen. If you sleep very hot, you might find them warmer than natural fibers.
What is the thread count and material?
The material is 100% microfiber with a 1800 thread count. The high thread count and double-brushed process are what give them that super soft, dense feel. Remember, thread count comparisons between microfiber and cotton aren’t exactly apples-to-apples, but the feel is undeniably plush.
Do they shrink in the wash?
They are labeled as shrink-resistant, and I haven’t experienced any noticeable shrinkage. I always follow the care instructions: machine wash in cold water and tumble dry on low heat. Removing them promptly from the dryer helps prevent wrinkles, too.
Is this set a good value for the money?
Considering it solves a niche problem (fitting a split king bed) and includes four pillowcases, I think it offers solid value for the specific need it fills. You’re paying for the specialized design and convenience. For a standard bed, you might find more options, but for an adjustable split king, the value is in the perfect fit.
My Final Verdict
After testing the Clara Clark Flex Top King Sheets, I can confidently say they solve a specific problem very well. The 80″ x 78″ fitted sheet with its 34-inch top cut fits my split king adjustable bed perfectly, and the 1800 thread count microfiber is undeniably soft. I recommend them to any adjustable bed owner who wants a complete, easy-care 6-piece set. I would not recommend them to hot sleepers who need maximum breathability or those who simply prefer the crisp feel of cotton.
The main limitation is the synthetic material, which doesn’t breathe like natural fibers. However, for the convenience, perfect fit, and included four pillowcases, that’s a trade-off I’m willing to make for my bed. If your priority is solving the split king sheet puzzle, these deliver.
Ready to Check the Price?
If you own a split-top king bed and want soft, hassle-free sheets that actually fit, this set is absolutely worth a closer look.
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