Cottingon Egyptian Cotton King Split-Top Sheet Set — Light Grey, 34" Flex-Head, 100% ELS Cotton & OEKO-TEX

Cottingon’s 4-piece Flex Head King sheet set is a split-top, adjustable-bed friendly bedding kit made from 100% Egyptian extra-long staple cotton in light grey.

This sheet set is engineered for split-top and adjustable mattresses: it includes a half-split fitted sheet (34" top), a large flat sheet, and two oversized pillowcases, all woven from OEKO-TEX certified Egyptian cotton. The fabric balances a soft, breathable hand with enough structure to stay put on mattresses up to 16" deep, making it a practical upscale option for modern beds such as Sleep Number, Flex Top King, and other split configurations.

How will these sheets perform on an adjustable or split king bed?

The set’s half-split fitted design lets each side of an adjustable mattress move independently without pulling the sheet out of place. Extra-wide, full 360° elastic secures the fitted corners and helps the fabric conform during lift and tilt motions. Expect reduced bunching at the head and a more consistent fit for movers and sleepers who adjust their positions overnight.

• 34" split at the top to accommodate independent head movement
• Full 360° elastic designed for mattresses up to 16" deep
• Compatible with Sleep Number, split kings, and adjustable frames

What is the fabric like and how should I care for it?

The sheets are woven from 100% Egyptian extra-long staple cotton, OEKO-TEX certified for low chemical content and soft hand-feel that typically improves with laundering. They are breathable and comfortable for year-round use while developing a silkier texture after a few washes. Follow machine-wash cold or lukewarm, tumble dry low, avoid high heat and bleach, and iron if desired for a neater finish.

• 100% Egyptian extra-long staple cotton for softness and breathability
• OEKO-TEX certification for peace of mind on textiles
• Machine wash cold/lukewarm, tumble dry low, do not bleach

What pieces come in the set and what are their dimensions?

This four-piece set contains one half-split (34" top) fitted sheet, one oversized flat sheet, and two generously sized pillowcases. The fitted sheet fits standard king mattress base dimensions (78" x 80") while the flat sheet and pillowcases are sized to cover and tuck comfortably on deep beds and taller pillows.

• Fitted (half-split top) 34" down/flex head, fits 78" x 80" mattresses
• Flat sheet approximately 102" x 108" for full top coverage
• Two pillowcases 20" x 40" to accommodate larger pillows

Will these sheets hold up and make a good gift?

The combination of long-staple Egyptian cotton and thoughtful construction aims to deliver lasting comfort and a refined aesthetic for master bedrooms, guest rooms, or vacation homes. Their practical design for adjustable beds and neutral light grey color make them a versatile present for occasions like holidays, housewarmings, and weddings.

• Durable weave that softens with washing for ongoing comfort
• Neutral light grey pairs well with most bedroom décor
• Packaged as a ready-to-gift 4-piece set for special occasions

Who is this for: This Cottingon sheet set suits sleepers with adjustable or split-top king mattresses who want a premium cotton option that stays secure during movement. It's ideal for couples using independent mattress adjustments, anyone seeking OEKO-TEX-certified cotton, and shoppers who prefer a neutral, refined look in light grey for master or guest bedrooms.