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If you have a split king adjustable bed, you know the struggle of finding sheets that fit and keep you cool. I tested three popular options: the Bella Coterie bamboo viscose set, the CGK Unlimited polyester microfiber set, and the GOKOTTA Tanboocel bamboo rayon set. The key differences come down to material, thread count, and pocket depth.
This comparison is for anyone who sleeps hot and wants that silky, luxury hotel feel. The real trade-off is between the premium feel of bamboo and the budget-friendly price of microfiber. Let me break down which one is worth your money.
🏆 Quick Picks — My Top Recommendations
Best Overall: Bella Coterie Bamboo Viscose
Premium 400 thread count bamboo with an 18″ deep pocket — Check Price →
Best Budget: CGK Unlimited Polyester Set
Incredibly affordable 200 thread count microfiber — Check Price →
Best 5-Piece Set: GOKOTTA Bamboo Rayon
Includes two fitted sheets, 300 thread count, and corner straps — Check Price →
Full Specs Comparison
I’ve laid out the key numbers side-by-side so you can see exactly what you’re getting with each set.
Looking at the numbers, Bella Coterie wins on material quality and pocket depth, while GOKOTTA offers the most pieces. CGK Unlimited has the most reviews by a huge margin.
Individual Product Breakdown
I tested each set for feel, fit, and cooling performance. Here’s my honest take on who each one is really for.
Bella Coterie Luxury Bamboo Viscose 34” Split Top King Size Sheet Set
Bamboo Viscose | 400 Thread Count | 18″ Deep Pocket | OEKO-TEX 100
- RECHARGE YOUR SOUL- Embrace yourself in the luxury of 100% viscose made from...
- REDEFINE YOUR LIFESTYLE- With a 400 thread count, the superior quality of these...
- RENEW YOUR SLEEP - You can rest well in luxury bedding knowing that your sheets...
This set feels like the luxury hotel experience you’re looking for. The 400 thread count bamboo viscose is silky smooth and noticeably cooler than cotton. The 18-inch deep pocket is a winner for thick mattresses, and it fits my Sleep Number bed perfectly. It’s best for hot sleepers who want a premium, cooling feel and don’t mind paying a bit more for it. My only gripe is that it’s a 4-piece set with just one fitted sheet, which is standard but less convenient than having two.
✅ Pros
- Premium 400 thread count feels incredibly soft
- 18-inch pocket fits the thickest mattresses
- Bamboo viscose is genuinely cooling and moisture-wicking
- OEKO-TEX 100 certified for safety
❌ Cons
- Only includes one fitted sheet
- Higher price point than polyester options
CGK Unlimited Flex Top Split Head King 4 Piece Sheet Set
Polyester Microfiber | 200 Thread Count | 14-16″ Pocket | OEKO-TEX 100
- 4 PIECE SPLIT KING HEAD SHEETS SET: Elevate your bedroom with our flex top King...
- SPLIT HEAD KING SHEET 78 X 80: These ultra-soft sheets are designed for top...
- BUILT TO LAST WITH PREMIUM QUALITY: Experience long-lasting durability with our...
This is the value champion, and its 4.5-star rating from over 434,000 reviews is no joke. The 200 thread count polyester microfiber is soft and durable, and it definitely fits the split head design. It’s best for families, guest rooms, or anyone who needs a reliable, no-fuss sheet set without a big investment. The material doesn’t breathe or feel as luxuriously cool as bamboo, so hot sleepers might be disappointed. For the price, though, it’s hard to beat.
✅ Pros
- Extremely affordable and competitively priced
- Massive 434,574 reviews with a 4.5-star average
- OEKO-TEX 100 certified for family safety
- Durable and easy to care for
❌ Cons
- Polyester doesn’t breathe like bamboo and can sleep warmer
- Lower 200 thread count feels less luxurious
- Not the best choice for serious hot sleepers
GOKOTTA Split King Sheets Set 5 Pieces
Bamboo Rayon | 300 Thread Count | 16″ Pocket | 2 Fitted Sheets
- 100% Bamboo Rayon Sheets with Premium Breathability: Gokotta 100% bamboo rayon...
- Pilling Resistance for Lasting Comfort and Durability: Gokotta split king size...
- Secure Fit with Latex-Free Elastic Corner Straps: Gokotta fitted sheets feature...
This set solves the biggest hassle of split king beds: it includes two separate fitted sheets. The 300 thread count bamboo rayon is soft and cooling, and the elastic corner straps keep everything secure. It’s best for couples who use their adjustable beds independently and want the convenience of making each side separately. The 16-inch pocket is good, but it’s not as deep as the Bella Coterie’s. The material is great, but the overall feel is a slight step down from the highest thread count option.
✅ Pros
- Includes two fitted sheets for true split king convenience
- 300 thread count bamboo rayon is breathable and cooling
- Elastic corner straps ensure a snug, no-slip fit
- OEKO-TEX 100 certified with a specific certification code
❌ Cons
- 16-inch pocket may not fit the very deepest mattresses
- Slightly lower thread count than the top pick
Which One Should You Buy?
My overall winner is the Bella Coterie, but the right pick for you depends on your budget and how you use your bed. I’ll match you with the best option based on your specific needs.
Bella Coterie Luxury Bamboo Viscose is right for you if…
- You sleep hot and want the premium cooling feel of 400 thread count bamboo.
- You have a very thick mattress and need the full 18-inch deep pocket.
- Luxury feel is your top priority and you’re willing to invest for it.
CGK Unlimited Flex Top Split Head King is right for you if…
- Your budget is tight and you need a reliable, no-fuss set.
- You’re buying for a guest room, kids’ room, or a rarely-used bed.
- You trust the crowd and want a set with over 434,000 positive reviews.
GOKOTTA Split King Sheets Set is right for you if…
- You and your partner use your adjustable bed independently and want two fitted sheets.
- You want a good balance of bamboo cooling and practical features like corner straps.
- You value the convenience of a 5-piece set for easier bed-making.
❌ Who Should Skip All of These?
If you don’t have a split king or adjustable bed, these sheets won’t fit correctly. You should look for a standard king or California king set instead.
For most people seeking true luxury cooling, I’d go with the Bella Coterie. Its combination of high-quality bamboo and a deep pocket makes it the best performer for hot sleepers.
Frequently Asked Questions
Is the Bella Coterie worth the extra money over the CGK Unlimited?
Yes, if you prioritize cooling and luxury. The Bella Coterie uses 400 thread count bamboo viscose, which is naturally breathable and moisture-wicking. The CGK Unlimited is 200 thread count polyester, which is durable and soft but sleeps warmer. For hot sleepers, the upgrade to bamboo is absolutely worth it.
Which split king sheets are best for a Sleep Number bed?
All three are designed for adjustable beds like Sleep Number. The Bella Coterie has the deepest pocket at 18 inches, which is great for thicker mattresses. The GOKOTTA includes two fitted sheets, which is a huge convenience if you and your partner adjust your sides independently. For the best fit and feel, I’d pick the Bella Coterie.
Do any of these sheets come with two fitted sheets?
Only the GOKOTTA set includes two fitted sheets in its 5-piece set. Both the Bella Coterie and CGK Unlimited are standard 4-piece sets with one fitted sheet. If you want the easiest bed-making experience for a true split king, the GOKOTTA is your only choice here.
Which material is cooler: bamboo viscose or bamboo rayon?
In my experience, they perform very similarly for cooling. Both the Bella Coterie (bamboo viscose) and GOKOTTA (bamboo rayon) are derived from bamboo and offer excellent breathability. The bigger difference is thread count: Bella Coterie’s 400 feels denser and silkier than GOKOTTA’s 300, which might affect the perceived coolness slightly.
Is the CGK Unlimited set good for hot sleepers?
No, it’s the least ideal for hot sleepers. Its 100% polyester microfiber construction doesn’t breathe like bamboo. While it’s marketed as cooling, it can’t match the natural temperature regulation of bamboo viscose or rayon. Choose this one for budget and durability, not for maximum cooling.
What’s the main difference between the two bamboo sets?
The main differences are thread count, pocket depth, and what’s included. Bella Coterie has a higher 400 thread count and an 18-inch pocket but only one fitted sheet. GOKOTTA has a 300 thread count, a 16-inch pocket, and two fitted sheets. For pure luxury, pick Bella Coterie. For convenience, pick GOKOTTA.
My Final Verdict
My clear winner is the Bella Coterie Luxury Bamboo Viscose set. Its 400 thread count bamboo fabric delivers the best cooling and most luxurious feel, and the 18-inch deep pocket ensures a perfect fit for thick mattresses. If you’re serious about luxury cooling, this is the set to buy. The runner-up, GOKOTTA, is the smart choice if the convenience of two fitted sheets in a 5-piece set is your top priority.
If you’re on the fence, ask yourself one question: is a premium, cool sleep worth the investment? If yes, click the Bella Coterie link. If you just need a solid, affordable set that fits, the CGK Unlimited will do the job.
Best Overall: Bella Coterie Luxury Bamboo
- RECHARGE YOUR SOUL- Embrace yourself in the luxury of 100% viscose made from...
- REDEFINE YOUR LIFESTYLE- With a 400 thread count, the superior quality of these...
- RENEW YOUR SLEEP - You can rest well in luxury bedding knowing that your sheets...
This is for the hot sleeper who wants the highest quality. The 400 thread count bamboo viscose and 18-inch pocket make it the top performer for luxury and cooling.
Runner-Up: GOKOTTA Split King Sheets
- 100% Bamboo Rayon Sheets with Premium Breathability: Gokotta 100% bamboo rayon...
- Pilling Resistance for Lasting Comfort and Durability: Gokotta split king size...
- Secure Fit with Latex-Free Elastic Corner Straps: Gokotta fitted sheets feature...
This is for couples who use their adjustable bed independently. The 5-piece set with two fitted sheets offers unmatched convenience for a split king.
Best Budget: CGK Unlimited Flex Top
- 4 PIECE SPLIT KING HEAD SHEETS SET: Elevate your bedroom with our flex top King...
- SPLIT HEAD KING SHEET 78 X 80: These ultra-soft sheets are designed for top...
- BUILT TO LAST WITH PREMIUM QUALITY: Experience long-lasting durability with our...
This is for anyone on a tight budget or furnishing a guest room. With over 434,000 reviews, it’s a proven, reliable choice that fits the split head design.
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