
NON Sticky Cotton Adjustable Split King
Score: 87/100
Slumber Cloud Essential Sheet Set Twin XL
Score: 82/100Rankings

A high-thread-count split-king sheet set offering exceptional softness, hypoallergenic properties, and robust resistance to wear. The trade-off is a synthetic microfiber feel that may not satisfy purists seeking natural cotton. Best for budget-conscious couples with adjustable split-king beds who prioritize durability and easy care.

The Slumber Cloud Essential Sheet Set is a Twin XL bedding set featuring NASA-derived Outlast® technology that actively regulates temperature for a cool, breathable sleep surface. Its premium price, limited color options, and final-sale policy may deter budget-focused shoppers. Ideal for hot sleepers and restless sleepers who value proactive cooling and a secure fit.
| Attribute | ![]() | ![]() |
|---|---|---|
18 inchesbest | — | |
1,800best | 300 | |
| ↓ lower better | — | 5.07 lbbest |
5 piecesbest | 4 pieces |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
General(4) | ||
Size (Mattress Fit) | Split King | Twin XL |
Material | 100% Long Staple Cotton | cotton/Outlast viscose |
Certifications | OEKO-TEX | Oeko-Tex Standard 100 |
Number of Pieces in Set (pieces) | 5 pieces | 4 pieces |
Design(3) | ||
Pocket Depth (inches) | 18 inches | 12-15 inches |
Thread Count | 1800 | 300 |
Weave | percale | sateen |

Products in the top-left offer the best value (high score, low price).

Editors and professional bedding reviewers acknowledge the set's practical split-top design and high thread count as strong points for adjustable split-king beds, but they caution that microfiber cannot fully replicate the luxurious feel and natural breathability of true Egyptian cotton. The percale weave and hypoallergenic properties are seen as solid functional benefits, while the synthetic material may limit its appeal to premium-seeking consumers.
Everyday users generally praise the sheet's secure fit on adjustable beds, its softness after washes, and the low-maintenance care instructions. Recurring themes include appreciation for deep pockets and wrinkle-free performance, alongside complaints about a slightly synthetic feel and occasional slipping when mattresses are very thick.

“stays in place when bed adjusts”

“soft and breathable after washes”

“Over 30,000 sleepers report high satisfaction, praising consistent coolness, reduced sweating, and secure fit that doesn't bunch up during movement.”




Professional reviewers commend the Slumber Cloud Essential Sheet Set for its NASA-derived Outlast® technology that actively regulates temperature, delivering a cool, breathable sleep surface that stays in place thanks to elastic and corner straps. The certification as Certified Space Technology™ and the softening single-ply sateen weave are highlighted as differentiators that outperform standard cotton bedding, though the limited color range and final-sale policy are noted drawbacks.
Everyday users overwhelmingly praise the sheets for delivering consistent coolness, reducing night sweats, and maintaining a secure fit that doesn't shift. The softness that improves with washing and the breathable feel in humid environments are recurring positives, while complaints focus on the final-sale nature of some colors and the initial crispness that softens over time.