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This is a split-top king sheet set built for adjustable and flex-top beds, where the head half splits so each side moves on its own while the foot stays joined. The fitted sheet is fully elasticized and fits mattresses up to 16 inches deep. The fabric is brushed microfiber with a percale-style weave, so it feels soft and resists wrinkles and needs little ironing. It suits couples on an adjustable base who want one fitted sheet that stays put through head and foot adjustments. Rivals in this niche include cotton split-head sets, which breathe better but wrinkle and cost more; this one trades natural fiber for easy care.
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Lowest price we've seen: $59.99 on Nov 10 at Amazon. Tracked across 2 stores since Nov 10.
Owners of adjustable beds rate it well, mainly for the split fit that stays on through head and foot movement. Complaints center on the synthetic feel and warmth, and on the inflated thread count.
1800 Series Split Top King Sheets for Adjustable Beds
Our 1800 Series Split Top King sheet set is designed for adjustable and flex-top mattresses where the top portion is split but the bottom remains connected. This lets each person adjust their side independently while keeping a clean, unified fit at the foot of the bed.
With a fully elasticized deep-pocket fitted sheet and a secure, stay-put fit, this set helps reduce shifting and bunching during adjustments, while delivering the soft, cozy comfort the 1800 Series is known for.
Key Features
• Designed specifically for Split Top King (Flex Top King) mattresses
Soft, cozy feel for comfortable sleep in any season
Balanced Percale Weave — 1800 Thread Count: 180 threads with 10 multi-ply yarn for a soft, lightweight feel that’s strong, breathable, hypoallergenic, and easy to care for
Premium microfiber — finely woven for softness, wrinkle resistance, and easy care
Deep-pocket fitted sheet with fully elasticized edge
• Fits oversized and pillow-top mattresses up to 16" deep
Wrinkle-resistant finish for a smooth look with minimal effort
Durable construction designed for frequent washing and everyday use
• Machine washable in cold water; tumble dry low
• 100-night return policy
• Designed & packaged in California
• OEKO-TEX® Standard 100 certified
If you need Split Top King sheets that fit correctly on an adjustable bed and stay comfortable night after night, the 1800 Series is a reliable choice.
FAQ's
What is a Split Top King sheet?
Split Top King sheets (also called Flex Top King sheets) are made for mattresses where the top portion is split but the bottom remains connected. This lets each person adjust their head independently on an adjustable base.
What’s the difference between Split King and Split Top King?
A Split King is typically two Twin XL mattresses side-by-side, while a Split Top King is one mattress with only the top portion split. This difference affects the type of fitted sheet you need.
Can you use regular King sheets on a Split Top King bed?
Generally, no. Regular King fitted sheets aren’t designed for the split at the head and can bunch or pull when the bed adjusts.
