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If you own a split king adjustable bed, you know finding the right sheets is a real challenge. You’re likely deciding between the popular Bella Coterie Luxury set and the KARISSA MAE Cooling set, both made from 100% bamboo viscose with an 18-inch deep pocket.
This comparison is for anyone who wants that silky, cooling feel but can’t decide between a higher thread count and a competitively priced option. I’ve looked at the specs and thousands of reviews to help you pick the right one for your bed and budget.
🏆 Quick Picks — My Top Recommendations
Best Overall: Bella Coterie Luxury Sheets
Higher 400 thread count & proven in over 5,000 reviews — Check Price →
Runner-Up: KARISSA MAE Cooling Sheets
Solid 300 thread count & FSC certified for eco-conscious buyers — Check Price →
Full Specs Comparison
Here’s a detailed, side-by-side look at the numbers that matter most when you’re choosing between these two bamboo viscose sheet sets.
The Bella Coterie sheet clearly wins on paper with a higher thread count and more reviews. However, the KARISSA MAE set holds its own with an extra FSC certification for sustainability.
Individual Product Breakdown
I looked at the key features, real customer feedback, and the specific details that make each sheet set stand out. Here’s my honest take on each one.
KARISSA MAE Cooling Bamboo Viscose 34″ Split Top King Sheet Set
300 Thread Count | 18” Deep Pocket | FSC & OEKO-TEX Certified | 4.2 Stars (182 Reviews)
- MADE FOR YOU: Simple, Honest, Natural, 100% Organically Grown.
- MADE FOR BETTER SLEEP: Cooling, Moisture-Wicking, Breathable Fabric.
- MADE FOR YOU, BACKED BY our 100% customer satisfaction guarantee and a 24 hour...
I think this is a solid, no-fuss option for someone who prioritizes eco-friendly materials and wants a good value. The 300 thread count bamboo viscose feels silky and cool, and I appreciate the extra FSC certification for sustainable forestry. It’s a great pick for the environmentally conscious sleeper who wants a reliable set without a huge crowd of reviews. My main hesitation is that it has a smaller pool of customer feedback to draw from compared to its competitor.
✅ Pros
- Includes FSC certification for sustainable sourcing
- Competitively priced for a full bamboo set
- 18-inch deep pocket fits thick mattresses securely
- Comes with organizer band and elastic corner straps
❌ Cons
- Lower 300 thread count than the Bella Coterie
- Far fewer reviews (182) to gauge long-term quality
- Fewer color options (14) available
Bella Coterie Luxury Bamboo Viscose 34” Split Top King Size Sheet Set
400 Thread Count | 18” Deep Pocket | OEKO-TEX Certified | 4.4 Stars (5,279 Reviews)
- 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 the crowd favorite for a reason. The 400 thread count makes a noticeable difference in the dense, luxurious feel of the fabric, and sleeping on sheets with over 5,000 positive reviews gives me a lot of confidence. It’s the clear winner for anyone who wants the highest perceived quality and doesn’t mind paying a bit more for it. The only real trade-off is that it lacks the specific FSC certification that the KARISSA MAE sheets have.
✅ Pros
- Higher 400 thread count for a denser, smoother feel
- Massive social proof with over 5,279 reviews
- Widest selection with 20 different color options
- Consistently high 4.4-star average rating
❌ Cons
- Priced higher than the KARISSA MAE option
- Does not have the FSC sustainability certification
Which One Should You Buy?
My pick for “best” depends entirely on what you value most in your bedding. Both are excellent bamboo viscose sets, but they cater to slightly different priorities.
KARISSA MAE Cooling Bamboo Viscose Sheets is right for you if…
- You want the most eco-conscious choice with the FSC certification for sustainable forestry.
- You’re looking for a great value on a high-quality bamboo set and want to save a bit.
- You don’t need the absolute highest thread count and trust a solid 300 thread count.
Bella Coterie Luxury Bamboo Viscose Sheets is right for you if…
- You prioritize a denser, more luxurious feel and want the higher 400 thread count.
- You find comfort in proven products and rely on the feedback from over 5,000 reviews.
- You want the widest variety and are choosing from their 20 different color options.
❌ Who Should Skip All of These?
If you dislike the silky, cool feel of bamboo viscose and prefer crisp, traditional cotton percale, these aren’t for you. Also, if your mattress is thinner than 18 inches, the deep pockets might be excessive.
For most people, I recommend the Bella Coterie set. The higher thread count and massive number of positive reviews make it the safer, more luxurious choice for your investment.
Frequently Asked Questions
Which bamboo sheet set is softer, KARISSA MAE or Bella Coterie?
Based on the specs, the Bella Coterie set should feel slightly softer and more substantial. It has a 400 thread count compared to the KARISSA MAE’s 300 thread count. While both are made from silky bamboo viscose, a higher thread count generally means a denser, smoother weave. For the softest feel, I’d pick Bella Coterie.
Is the Bella Coterie worth the extra money over KARISSA MAE?
Yes, for most people, the Bella Coterie is worth it. You’re paying more for a higher 400 thread count and the proven reliability shown in over 5,279 reviews. If you want the most luxurious feel and don’t mind the price difference, go with Bella Coterie. Choose KARISSA MAE only if your budget is tighter or you specifically want the FSC certification.
Which sheets are better for hot sleepers?
Both are excellent for hot sleepers because bamboo viscose is naturally cooling and moisture-wicking. There’s no significant difference in their cooling ability based on the materials. Your choice should come down to other factors like thread count and price, not cooling performance. You’ll stay cool with either set.
Do both sheet sets fit a Sleep Number bed?
Yes, absolutely. Both the KARISSA MAE and Bella Coterie sets are specifically designed as 34″ split top king sheets for adjustable bases like Sleep Number. They both have an 18-inch deep pocket to accommodate thick mattresses. Fit is not a differentiator between these two products.
Which brand has better customer reviews?
Bella Coterie has significantly better and more extensive customer reviews. It holds a 4.4-star average from 5,279 reviews, while KARISSA MAE has a 4.2-star average from 182 reviews. The sheer volume of positive feedback for Bella Coterie makes it the safer, more trusted choice based on community experience.
Are KARISSA MAE sheets more eco-friendly?
Yes, the KARISSA MAE sheets have an additional eco-friendly certification. Both are OEKO-TEX certified, but KARISSA MAE is also FSC (Forest Stewardship Council) certified. This means their bamboo sourcing meets specific standards for sustainable forestry. If this is a top priority for you, KARISSA MAE is the better choice.
My Final Verdict
After comparing every detail, my clear overall winner is the Bella Coterie Luxury Bamboo Viscose Sheets. Its higher 400 thread count provides a noticeably more luxurious feel, and the overwhelming social proof from over 5,279 reviews makes it the most reliable choice. The KARISSA MAE set is a fantastic runner-up best for eco-focused shoppers who want the FSC certification and a great value.
If you’re still on the fence, let this decide: choose Bella Coterie for proven quality and a denser fabric. Only choose KARISSA MAE if the specific FSC sustainability badge is your absolute top priority over thread count.
Best Overall: Bella Coterie Luxury Sheets
- 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 the set for anyone who wants the highest quality feel and trusts a product with massive positive feedback. The 400 thread count makes the difference.
Runner-Up: KARISSA MAE Cooling Sheets
- MADE FOR YOU: Simple, Honest, Natural, 100% Organically Grown.
- MADE FOR BETTER SLEEP: Cooling, Moisture-Wicking, Breathable Fabric.
- MADE FOR YOU, BACKED BY our 100% customer satisfaction guarantee and a 24 hour...
I recommend this for the eco-conscious buyer who values the FSC certification. It’s a competitively priced, high-performing set with a solid 300 thread count.
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