Cottingon Egyptian Cotton Split-Top King Sheet Set, Light Blue — 4-Piece Flex-Head, Deep Pocket & 360° Elastic

Cottingon's 4-piece Flex Head King sheet set is a split-top, extra-long-staple Egyptian cotton bedding kit designed for adjustable and split king beds, offering breathable softness and a secure fit.

Made from OEKO-TEX certified 100% Egyptian cotton, this light blue top split king set combines a full-size flat sheet, two pillowcases, and a half-split flex-head fitted sheet to accommodate adjustable mattress motion. The fabric’s long staple fibers create a smooth, breathable surface that softens with each wash, while the extra-wide 360° elastic holds the fitted sheet firmly in place on mattresses up to 16 inches deep. It’s tailored for Sleep Number, split king, and flex-top adjustable beds where independent head movement is key.

How does the split-top design work with adjustable beds?

The half-split or flex-head fitted sheet has a divided top section so each side can lift independently with minimal tugging or bunching. This keeps both sleepers comfortable when one side raises the head without pulling the other side’s sheet. The result is a neater appearance and less readjusting each morning.

• Half-split 34" top accommodates independent head movement
• Full 360° elastic secures the sheet around the mattress
• Fits mattresses up to 16" deep, including adjustable models
• Compatible with Sleep Number and split king configurations

What kind of fabric and feel can I expect?

This set is woven from extra-long-staple Egyptian cotton certified by OEKO-TEX, so you get durable, breathable fabric with a soft hand. The long fibers produce a smooth finish that becomes silkier after a few washes, while still maintaining structure and breathability night after night.

• 100% Egyptian cotton for long-lasting softness
• Extra-long-staple fibers for a smooth, durable weave
• Softens naturally with laundering without losing strength
• Light blue color for a calm, versatile bedroom palette

Will these sheets stay on my mattress all night?

Yes—these sheets are designed with strong, extra-wide elastic that wraps fully around the mattress for a secure fit. The deep pockets and robust elastic prevent slipping, making them well suited to thicker mattresses and beds with adjustable movement.

• 360° elastic prevents corner pop-off and shifting
• Deep pocket fit up to 16" accommodates most mattresses
• Durable elastic retains stretch through repeated washes
• Split-top layout reduces strain when adjusting the head

How should I care for and maintain these sheets?

Machine wash in cold or lukewarm water and tumble dry on low to preserve fabric integrity and color. Avoid high-heat drying and bleach; cotton will naturally soften after a few washes, achieving its intended silky texture.

• Machine wash cold or lukewarm; tumble dry low
• Do not bleach; avoid high-heat drying
• Iron on low if desired; cotton softens with washing
• OEKO-TEX certification indicates tested fabric quality

Who is this for: Cottingon’s Flex Head King 4-piece sheet set is aimed at sleepers with adjustable or split king beds who want high-quality cotton feel and a secure fit. It’s ideal for couples using independent head adjustments, anyone with a thicker mattress up to 16 inches, and shoppers who prefer breathable, long-staple Egyptian cotton in a calming light blue shade. The set also makes a practical, upscale gift for anyone upgrading their bedding for comfort and adaptability.