Mellanni Extra Deep Split King Sheets - Ultra Soft, Cooling

In this review of the Mellanni Extra Deep Split King Sheets the bottom line is simple: these are best for sleepers who want lightweight, easy-care bedding that still feels soft and hotel-like. The set stands out for its airy, double-brushed microfiber that wicks moisture and enhances airflow, making it comfortable in both summer and winter. It is also aimed at busy households that need durable, stain- and fade-resistant sheets that hold up to frequent washing. If you want a deeply pocketed, split king solution with a luxury hand without heavy weight, this set delivers.

Key Features

• Lightweight construction: The thin, airy fabric improves breathability and dries quickly for year-round comfort without feeling heavy at night.
• Complete 5-piece split king set: Two fitted sheets, one large flat sheet and two pillowcases provide a full bedding solution for split king beds and adjustable bases.
• Deep pockets and secure fit: Each fitted sheet fits mattresses up to 21 in deep and includes a sewn-in elastic band for a snug, stay-put fit.
• Durable microfiber: Double-brushed microfiber offers an ultra-soft hand while resisting stains, tears, and wear from repeated washing.
• Easy care: Machine wash cold and tumble dry low to keep sheets quick-drying, low-maintenance, and shrink- and wrinkle-resistant.
• Tested safe: OEKO-TEX STANDARD 100 certification means the fabric was tested for many harmful substances for added peace of mind.

Who It's For

The Mellanni extra deep split king sheets are ideal for couples who use a split king configuration, owners of thick mattresses or mattress toppers up to 21 in deep, and families who need low-maintenance bedding. People who value an ultra-soft, hotel-like feel but prefer a lightweight, breathable sheet rather than a heavy sateen will appreciate this set.

These sheets may not be the best choice for shoppers who prefer a substantial, thick weave or those seeking a crisp cotton percale hand. Customers who prioritize a heavier weight or natural-fiber feel should look elsewhere.

Pros & Cons

Pros

• Soft, double-brushed microfiber gives a comfortable, luxury feel that many describe as plush.
• Excellent fit for deep mattresses with 21 in pockets and secure elastic to prevent slipping.
• Low-maintenance care and strong resistance to stains, fading, wrinkling, and pilling.
• Lightweight and breathable, good for year-round temperature regulation.

Cons

• Some customers note the sheets are very thin in feel, which may disappoint those expecting heavier fabric.

Specifications

Set contents	2 fitted sheets (39x80x21 in), 1 flat sheet (108x102 in), 2 pillowcases (20x40 in)
Fit	Extra deep pockets fit up to 21 in mattress depth
Material	Double-brushed microfiber
Care	Machine wash cold, tumble dry low
Safety	OEKO-TEX STANDARD 100 certified
Performance	Wrinkle, fade, stain, and pill resistant; quick-drying

Our Verdict

These split king sheets are a smart value for anyone wanting a soft, breathable, and low-maintenance bedding set that fits deep mattresses. They deliver a hotel-like feel without bulk, stand up well to washing, and are a practical choice for busy bedrooms and households with kids or pets.

Frequently Asked Questions

Will these fit a mattress with a topper?
Yes, the extra deep 21 in pockets were designed to accommodate thick mattresses and common toppers while keeping a secure fit.

Are these sheets warm or cooling?
The lightweight, breathable microfiber is temperature-regulating - it wicks moisture and helps airflow, so it can feel cooling in summer and comfortable in winter.

How do they hold up to washing?
They are engineered to resist shrinking, fading, wrinkling, and pilling and are easy to machine wash cold and tumble dry low for quick drying.