Cottingon 4 Piece King Split Sheets - Soft Premium Egyptian Cotton

In this review of the Cottingon 4 Piece King Sheets the bottom line is simple: these sheets are best for couples who use adjustable or split king beds and want a noticeably soft, breathable cotton set that stays put through night adjustments. The reviewer found the OEKO-TEX certified 100% extra long staple Egyptian cotton provides genuine comfort that improves after a few washes, while the half split fitted design keeps each side independent so Sleep Number and flex top users can adjust without tugging the neighbor's side. Fit, softness, and secure elastic are the standout reasons to consider this set.

Key Features

• 100% Extra Long Staple Cotton: The premium Egyptian cotton fabric feels soft and breathable and relaxes into a silkier hand after a couple of washes.
• OEKO-TEX Certified: Certification gives peace of mind about harmful substances and suits buyers seeking safer textiles for skin-sensitive sleepers.
• Top Split King Design: The set includes a half split fitted sheet so each side of a split king or adjustable bed can move independently without pulling on the other side.
• Deep Pocket Fit: The fitted sheet has full 360 elastic and fits mattresses up to 16 in deep, keeping corners snug overnight.
• Complete 4 Piece Set: Includes two pillowcases 20 in x 40 in, one flat sheet 102 in x 108 in and one half split fitted sheet 34 in down or flex head 78 in x 80 in, covering standard split king needs.
• Easy Care: Machine washable in cold or lukewarm water and tumble dry low; the cotton softens with washing for improved comfort.

Who It's For

The Cottingon split king sheet set is aimed at owners of adjustable beds, Sleep Number systems, or anyone with a flex top king mattress who needs a fitted sheet that allows independent movement of each side. It also suits shoppers who prefer natural fiber bedding and want a set that becomes softer with repeated laundering.

Those who should look elsewhere include buyers who need wrinkle-resistant microfiber or performance moisture-wicking sheets, and shoppers who require fitted sheets for mattresses deeper than 16 in. Also, shoppers seeking an aggressively crisp hotel-style finish right out of the package may prefer a different weave.

Pros & Cons

Pros

• Softness and comfort improve with washing, delivering cozy nightly sleep.
• Split-top fitted design works well for Sleep Number and adjustable beds without distortion.
• Full 360 elastic and extra-wide elastic hold the sheet securely on up to 16 in mattresses.
• OEKO-TEX certification supports safer fabric choices for sensitive skin.

Cons

• Fabric quality impressions are mixed among customers; some may find the initial hand different from other premium cottons.
• Not suitable for mattresses deeper than 16 in or for shoppers who want wrinkle-free synthetic fabrics.

Specifications

Set Contents	2 pillowcases, 1 flat sheet, 1 half split fitted sheet
Pillowcase Size	20 in x 40 in
Flat Sheet Size	102 in x 108 in
Fitted Sheet Size	Half split 34 in down or flex head, fits 78 in x 80 in
Fabric	100% Extra Long Staple Egyptian Cotton
Fit Depth	Fits up to 16 in deep mattress with 360 elastic
Certification	OEKO-TEX certified

Our Verdict

The Cottingon 4 Piece King split sheet set is a practical, good-value option for adjustable and split king beds, offering genuine comfort from 100% Egyptian cotton and a secure deep-pocket fit. For couples who need independent movement and prefer natural fibers that soften with washings, it is a reliable choice that balances comfort, fit, and sensible care instructions.

Frequently Asked Questions

Will this fit my adjustable split king mattress?
Yes, the half split fitted sheet and full 360 elastic are designed for split king and adjustable beds including flex top and Sleep Number type systems.

How should I wash these sheets to keep them soft?
Machine wash in cold or lukewarm water, tumble dry on low, do not bleach, and avoid high dry temperatures; the cotton will soften after a couple of washes.

What mattress depth will these sheets fit?
The fitted sheet fits mattresses up to 16 in deep thanks to extra-wide elastic and full 360-degree elastic retention.