Cottingon King Split-Top Sheet Set 4-Piece White — 34-inch Flex Head, 100% Egyptian Cotton, 360° Elastic

Cottingon’s 4-piece Flex Head King sheet set is a split-top, adjustable-bed friendly bedding bundle crafted from 100% OEKO-TEX certified Egyptian cotton for soft, breathable night comfort.

These white sheets are made to fit split-top king mattresses and adjustable beds without bunching or slipping. The set includes two pillowcases, one oversized flat sheet, and a half-split fitted sheet with full 360° extra-wide elastic so each side of a split or adjustable mattress can move independently. Designed for lasting softness and easy care, this set blends luxury cotton feel with practical features for modern beds.

How does the split-top flex head design work for adjustable beds?

The split-top (34" top) fitted sheet separates at the head so each side of an adjustable or split king mattress can raise or lower independently. This prevents pulling and untucking at the head while keeping the rest of the bed smoothly made.

• 34" split at the head to accommodate flex or uplift motions
• Half-split fitted sheet keeps feet and midsection continuous for a neat look
• Extra-wide 360° elastic secures the sheet during mattress movement
• Compatible with Sleep Number, split king, and flex-top designs

What are the fabric and care details for long-lasting softness?

The sheets are woven from 100% extra-long staple Egyptian cotton that is OEKO-TEX certified, offering breathable, smooth fabric that softens further with washing. Proper care preserves fiber integrity and keeps the cotton feeling plush over time.

• 100% Egyptian cotton, extra-long staple for strength and softness
• OEKO-TEX certification ensures low chemical residue and safety
• Machine wash cold or lukewarm, tumble dry low, do not bleach
• Iron on low if desired; sheets soften over a few washes

Will this set fit my mattress and what are the exact dimensions?

The set was sized for adjustable and split-top king mattresses and fits most standard mattresses with depths up to 16 inches. The package contains one half-split fitted sheet sized to 78" x 80" with a 34" split at the head, one oversized flat sheet, and two large pillowcases.

• Fitted sheet: 78" x 80" with 34" split at head and 360° elastic
• Flat sheet: 102" x 108" to cover split configurations neatly
• Pillowcases: 20" x 40", standard for king-size pillows
• Elastic and cut designed for mattresses up to 16" deep

How does this sheet set perform in everyday use?

Designed for real bedrooms, the Cottingon set balances luxury feel with practical durability. The fabric breathes to help regulate temperature, the split-top prevents head-end tugging on adjustable beds, and the deep, all-around elastic keeps everything anchored through nightly movement.

• Breathable cotton for comfortable sleep across seasons
• Secure elastic prevents slipping and requires fewer adjustments
• Simple machine-wash care for busy households
• Neutral white color coordinates with any bedroom decor

Who is this for: Cottingon’s 4-piece Flex Head King sheet set is ideal for sleepers with adjustable or split-top king mattresses, couples sharing adjustable beds, and anyone who wants the feel of high-quality Egyptian cotton with practical features for mobility-enabled beds. It’s also a thoughtful gift for new homeowners or anyone upgrading to a split king or Sleep Number-style mattress who values both comfort and a secure fit.