California Design Den Split King Sheet Set - 600 TC Cotton Luxury

In this review the California Design Den Split King sheet set earns praise for delivering a hotel-style cotton sleep surface that fits adjustable and deep mattresses. The biggest reason to buy is the combination of a certified 600 thread count cotton sateen weave that stays breathable and becomes softer with each wash, making it a strong choice for sleepers who want a crisp, durable sheet set for a split king adjustable bed.

Key Features

• 600 thread count cotton sateen: Provides a crisp, hotel-like feel that remains breathable across seasons and softens with repeated washing.
• Split king fit: Includes one king flat sheet and two twin XL fitted sheets so each side of an adjustable bed can move independently while keeping a tidy top layer.
• Deep pocket fitted sheets: The fitted sheets fit mattresses 8 to 15 in deep thanks to all-around elastic and a clear foot-side indicator for easier bed making.
• OEKO-TEX STANDARD 100: Certified free of harmful substances, offering reassurance for sensitive skin and everyday use.
• Durable easy care: Machine wash and tumble dry on regular settings without pilling, shrinking, or significant fading when cared for as recommended.

Who It's For

This set is well suited to couples using an adjustable split king frame or anyone with a deep mattress who needs full king pillow coverage and separate fitted sheets for each side. It is also a good match for shoppers who prefer a crisp, cotton sateen hand feel rather than a silky, sateen finish.

Those who want an ultra-smooth, slippery sateen may prefer a different weave, and buyers seeking bold or dark gray tones should note this light grey shade is a soft neutral with a cool undertone, not a dark or blue-gray.

Pros & Cons

Pros

• Softens with each wash while maintaining a high-quality cotton feel and breathability.
• Split king design and deep pockets make it practical for adjustable beds and thick mattresses.
• OEKO-TEX certification and durable construction reduce worry about harmful chemicals or rapid wear.

Cons

• Intentional crisp cotton hand means it is not a silky-soft texture, which some sleepers expect from sateen.
• Light grey color is a cool, soft neutral and may not match if a darker gray was expected.

Specifications

Our Verdict

The California Design Den split king sheet set is a solid choice for adjustable bed owners and anyone with a deep mattress who wants a breathable, hotel-quality cotton sheet that holds up to regular laundering. It offers excellent value for a certified 600 TC cotton sateen that stays comfortable and becomes even more inviting with use.

Frequently Asked Questions

Will these sheets fit an adjustable split king mattress?
Yes, the set includes two twin XL fitted sheets designed for split king adjustable beds and a king flat for a neat top layer.

How deep are the fitted sheet pockets?
The fitted sheets have all-around elastic and are made to fit mattresses 8 to 15 in deep.

Is the light grey color dark or blue-toned?
No, the light grey is a soft neutral with a cool undertone and is not dark gray or blue-gray.